Ash Sutton scored his first win of the British Touring Car Championship season at Brands Hatch as Colin Turkington spun down to 25th and gave Dan Cammish the points lead.
In what is expected to be the final race meeting for BMR's Subaru Levorg, greasy conditions allowed Sutton to soar from 11th on the grid to win over Andrew Jordan by 5.223 seconds.
But the major talking point was first-lap contact between Turkington and Matt Neal, which spun the WSR driver out of second position and means he now trails Cammish by eight points ahead of the final race of the season.
As polesitter Cammish and Neal made laboured starts, Turkington had a lightning getaway to launch from fifth past Neal into Paddock Hill Bend.
He tried to also pass Cammish but yielded, with the Honda Civic Type R driver slow through Druids to allow Neal to close back up.
On the approach to Graham Hill Bend, Turkington covered the inside line in defence but made contact with Neal.
That sent the BMW 330i M Sport spinning over the grass on the exit and he rejoined down in 28th position.
The race was then neutralised for an incident involving his team-mate Tom Oliphant.
As Jack Goff suffered oversteer on the exit of Paddock Hill Bend he tagged Oliphant's rear and sent the BMW spinning across the track, where he was collected by the unsighted Adam Morgan.
Turkington dived into the pits for slick tyres, but only on the final lap did Jake Hill - also on slicks - set the race's fastest lap so the reigning championship recovered to just 25th.
Cammish made a clean restart, while Sutton deprived Tom Chilton of position into Hawthorns as the ballast free Levorg continued to climb.
He then passed Neal at Surtees on the inside and immediately caught Cammish, who did little to prevent Sutton from passing into Clearways for the lead.
Despite another safety car when a slick-shod Mark Blundell binned his Audi S3 into the gravel at Druids, Sutton was unchallenged and won by five seconds.
Jordan crossed the line in second, having moved past Mike Bushell at Paddock Hill Bend before tangling with Neal for third.
The BMW 3 Series driver then caught Cammish and outdragged him down the main straight to pass his title rival - putting him five points off Turkington on 305, with Cammish on 318.
Cammish hung on to third ahead of team-mate Neal.
Jason Plato was a late climber and latched on to the rear of Neal, but at Hawthorns he lost the rear of his Vauxhall Astra.
He pinned the throttle to drag it back on track but fell behind Tom Chilton and Ollie Jackson for seventh place.
Michael Caine scored the best result of his BTCC comeback in eighth ahead of Rory Butcher - who claimed the Independent teams' championship for AMD Tuning at BTC Racing's expense.
Stephen Jelley rounded out the top 10, followed by Senna Proctor - who was drawn on pole for the partially reversed race three grid.
Race two result
|1||Ash Sutton||BMR Racing||Subaru||18||35m18.719s|
|3||Dan Cammish||Team Dynamics||Honda||18||7.158s|
|4||Matt Neal||Team Dynamics||Honda||18||9.901s|
|5||Tom Chilton||Motorbase Performance||Ford||18||10.225s|
|6||Ollie Jackson||Motorbase Performance||Ford||18||11.173s|
|7||Jason Plato||Power Maxed Racing||Vauxhall||18||11.451s|
|8||Michael Caine||Motorbase Performance||Ford||18||11.895s|
|9||Rory Butcher||AmD Tuning||Honda||18||12.177s|
|10||Stephen Jelley||Team Parker Racing||BMW||18||12.259s|
|11||Senna Proctor||BMR Racing||Subaru||18||12.722s|
|12||Aiden Moffat||Laser Tools Racing||Infiniti||18||13.416s|
|13||Josh Cook||BTC Racing||Honda||18||14.555s|
|14||Carl Boardley||Team Hard||Volkswagen||18||14.935s|
|15||Daniel Rowbottom||Ciceley Motorsport||Mercedes||18||16.186s|
|16||Bobby Thompson||Team Hard||Volkswagen||18||17.462s|
|17||Rob Collard||Power Maxed Racing||Vauxhall||18||18.192s|
|18||Mike Bushell||AmD Tuning||Honda||18||18.959s|
|19||Jake Hill||Trade Price Cars Racing||Audi||18||19.772s|
|20||Rob Smith||Excelr8 Motorsport||MG||18||21.085s|
|21||Tom Ingram||Speedworks Motorsport||Toyota||18||21.364s|
|22||Sam Osborne||Excelr8 Motorsport||MG||18||25.597s|
|23||Michael Crees||Team Hard||Volkswagen||18||27.631s|
|24||Chris Smiley||BTC Racing||Honda||18||30.438s|
|26||Adam Morgan||Ciceley Motorsport||Mercedes||18||1m04.978s|
|27||Matt Simpson||Simpson Racing||Honda||16||2 Laps|
|-||Mark Blundell||Trade Price Cars Racing||Audi||8||Retirement|
|-||Jack Goff||Team Hard||Volkswagen||0||Retirement|
Leading drivers' standings
Race three grid
|1||Senna Proctor||BMR Racing||Subaru|
|2||Stephen Jelley||Team Parker Racing||BMW|
|3||Rory Butcher||AmD Tuning||Honda|
|4||Michael Caine||Motorbase Performance||Ford|
|5||Jason Plato||Power Maxed Racing||Vauxhall|
|6||Ollie Jackson||Motorbase Performance||Ford|
|7||Tom Chilton||Motorbase Performance||Ford|
|8||Dan Cammish||Team Dynamics||Honda|
|10||Ash Sutton||BMR Racing||Subaru|
|11||Aiden Moffat||Laser Tools Racing||Infiniti|
|12||Josh Cook||BTC Racing||Honda|
|13||Matt Neal||Team Dynamics||Honda|
|14||Carl Boardley||Team Hard||Volkswagen|
|15||Daniel Rowbottom||Ciceley Motorsport||Mercedes|
|16||Bobby Thompson||Team Hard||Volkswagen|
|17||Rob Collard||Power Maxed Racing||Vauxhall|
|18||Mike Bushell||AmD Tuning||Honda|
|19||Jake Hill||Trade Price Cars Racing||Audi|
|20||Rob Smith||Excelr8 Motorsport||MG|
|21||Tom Ingram||Speedworks Motorsport||Toyota|
|22||Sam Osborne||Excelr8 Motorsport||MG|
|23||Michael Crees||Team Hard||Volkswagen|
|24||Chris Smiley||BTC Racing||Honda|
|26||Adam Morgan||Ciceley Motorsport||Mercedes|
|27||Matt Simpson||Simpson Racing||Honda|
|28||Mark Blundell||Trade Price Cars Racing||Audi|
|29||Jack Goff||Team Hard||Volkswagen|