I can commiserate with you
A couple of track days ago I noticed the R6 seemed slow , well slower than usual for me
I was being passed by ever one then the bike felt like it was having a slow motion engine seize
until
it just stopped stalled in the middle of the track with the back wheel immovable .
Turns out the inside of my boot was catching on the rear brake boomerang shaped bracket,
seems the previous owner for some reason reversed the bracket and turned it up side down so the edge of my boot held it on.
Heated up so much that the fluid must of boiled until it grabbed on to the rotor and wouldn't let go .
Embarrassing pick up at the end of the session (
Thanks for deleting the video Paul
) but unlike you no damage done cooled off and let off.
At least you didn't bin the bike.
Good luck