Personally, I think it was a set up as his reaction was just to controlled. I mean, if you came back to find your girlfriend smashing up your 360 you'd not ask why, you'd just ask her to seek psychiatric help or turf her out.
As always, the wrong tools for the job. Girl, if you want to smash something then don't use a golf club, go for a sledge hammer!
Judge for yourself, but I think it's fake. Probably an RROD he had lingering around.