I think one of the last times Brian tuned him up he went out the next week and won a tourney, after playing crap in the prior weeks. I hope he goes out and wins, and gives Brian some nice credit. Better still, i hope he keeps working with him. I did see on Brian's site he is definitely working with him this week.
Ususally David is pretty automatic, hence the no-need for much of a swing coach. When he starts going bad its because he starts to get below the plane on the downswing and starts trying to hit a draw too much. That is when he ususally rings brian.
I figured he might soon too because he didn't have a good showing in the masters, actually he missed the cut.
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I'm not a TGM or PGA certified Pro, but I did stay at a Holiday Inn Express last night