Don't think Tsonga has been the same since RG last year where he got booed off by his own countrymen. I think he's just disillusioned now with tennis, he did an epic racquet smash in yesterdays match.
Tsonga is what Andy could have been if he'd have let all those dissapointments get to him, he needs a break from tennis or something.
I agree - he seems to have lost his joy in tennis since RG. Going from hero to villain with his home crowd in the space of 24 hours must have been a bitter pill to swallow.