I think he does swing different in tournaments....more aggressive. He just seems to have that tendency whether it be the way he is, something that comes out under pressure, something that he can time on the range but not under pressure, or plain n simple something he needs to try to dial back.
Jim has mentioned this quite a bit.....I've seen it too. You see him in these clinics n stuff........even when he trys to really go after one for the crowd......it just looks so much more smooth, balanced, in-sync, in control, etc. (insert other adjectives)
Saw him in one on TGC that really stood out to me (even before I was into all this golf swing stuff)....he said "I'll really step on this one." He bombed it dead straight and noticebly further. Looked really nice.....no weird finish....etc.
Having said that tho.....I'm sure it is a valid issue in itself......but first wobbly point/root cause/what you fix first IS......
?
(what has to be determined)