I dont think its chopped, everything is lining up to good. The tires not squatting is a little weird but they may not be soft side slicks. But then again, look at the driver side rear, its wrinkled and biting pretty good.
As far as the tires, if you notice when its just driving around the back wheels aren't as deep as the wheels on the track. Tires get changed out all the time at tracks, thats nothing new. Also, look at the two pictures, the one where its on the ground is a different time than the racing pic. Look in front of the passenger door, on the ground there isnt a little yellow sticker but on the drag strip there is, so he may not have even had slicks in the other pic.