Airwaves Yamana team boss Colin Wright has said the smoke coming from Leon Camier's bike on the final lap of British Superbike race two at Cadwell Park was caused by the oil cooler rubbing on the exhaust and has apologised to the rider for costing him points.

Camier was disqualified from the race because he says he got his signal flags mixed up and didn't immediately leave the track when shown a black and orange flag plus his race number.

"I'd like to apologise to Leon for the error we made at Cadwell Park on Monday. We have found that the oil cooler had made contact with the exhaust, causing a small oil leak, and this was responsible for the smoke that was visible for all to see," said Wright.

"Had this error not occurred, Leon would now be in a position where he would only need 4.5 points in the remaining rounds to secure the championship for Airwaves Yamaha. I'd also like to take this opportunity to thank Leon for immediately showing dignity and professionalism when he learned of his disqualification from the results.

"There has been comment made that a lack of competition has been behind Leon's success this year. But comparing his times from Race One to those of 2008 winner Leon Haslam, we can see that he still would have won by 3.5 seconds. He's had an outstanding season so far.

"The marshals and Race Director absolutely made the right call regarding the black and orange flag, as this was the only way that Leon would be made aware of a problem. As Leon did not leave the circuit immediately he was disqualified from the results.

"Unfortunately for us, the Race Director had to take this action exactly as the rules state. Had the oil leak been worse, Leon could have crashed and would almost certainly have caused others to fall on the oil."