Gooden is playing balls out in his contract year. He is out there showing off for the Spurs and anyone else who is watching. With the economy the way it is, he knows he's got to give people as much to see as he can.
He was something of a ballstopper/ballhog before, and I haven't watched a ton of his games, but I don't remember him being as much of a gunner. Maybe Pop sent him out there with the instructions to be aggressive and shoot the ball, and since he's shot pretty well since he's been here, those instructions have stayed the same. But, I think part of it has to be that he's out there gunning for a new deal, and that's great. Its good to have a guy or two (I'm looking at you, Ime) out there trying to get paid for next year in a bad economy.