Just saw this exploded cop car driving around after sending not-glados back to delamain. Also had a whole cool car chase followed by a bike crash when taking that one cab slowly back to del though and another took me past the the car I'm driving so huge improvements overall.
Definitely odd, seems like the computer must have something registering as a fake controller input... maybe a weird tack pad or other input device? Maybe some obscure test/benchmarking program?
But not sure why the game won't switch off either, I can swap between the two without disabling either one, my game doesn't seem to care.