Glad the driver was ok...he may be a little red faced depending on the circumstances of the crash.
As for the speculation on TC, how can we know? It's perfectly logical that BMW would want to test DSC etc in track conditions to fine tune the system's ability to handle the car at its limits. So it may have been on. It may have been off if the purpose of the test was to test the car's ultimate limits. Only the testing team know.
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