Plus I think plainly he just got used to knocking guys out.. He's never really minded getting hit in the process of busting up his opponents, but as he's gone on, it's almost like he's learnt that he can come in, take blows, and still knock people out and win the fight.... It's worked most of the time.. And his on real genuine loss is to Mayweather who is the P4P best fighter, so it's no shame to lose to him (unless you get knocked with a left hook into the corner post.... Kidding guys )
So really I think his success has let him get a little more lazy and be a bit more gung ho to get the fight over and done with....

Like VD said, I don't think he's going to change that... I'd love to see him with some more head movement and not so much diving in with his left hook and then getting clinched by his opponents..