There you go, have fun. I can understand why you guys want to lock the tyre temps, but i do also hope it will never become implemented in the game apart from modded in like this.
Not officially, but you can always remove the "~000" version number behind the .veh file and folder and you can open it up in the test tab in singleplayer mode.
My thoughts as well, i also noticed this. If the clutch bar there looks like that when the car is moving, that explains everything you see in the video
Might have to recalibrate your clutch as even in the autoclutch mode it's possible to engage the clutch axis manually