Weir Wondering If New Swing Coach Will Work

Hello. A couple of days ago in this blog I was wondering what was wrong with Mike Weir. Turns out I've found out since then a lot is wrong. Weir apparently injured himself in the quarterfinals of the World Match Play vs Paul Casey so bad he missed the following week's WGC American Express Championship. Now it was announced on tsn.ca Weir is parting ways with his swing coach of 10 years, Mike Wilson.
Weir's explanation was he needs to make changes now so he's ready for 2007. He wanted to get a fresh perspective from a new coach.
I read the headings of some of the comments following the tsn.ca article. It seems like no matter what the subject, by about the 20th comment everyone's calling everyone else a moron. Now I don't mind if you reply to this and say I'm a moron, but don't call fellow readers morons.
Anyway, some of the comments were interesting. Some agreed with my theory that Sunday rounds are causing Weir the most grief. Others blamed the short game. Still others think Mike is no longer hungry.
The question is, what is the root cause? Are swing problems causing Weir to put too much pressure on himself Sunday? Are they affecting his short game? Or are they causing his hunger to make him too frustrated? Only Weir knows.
Will a swing coach change work? Well, it seems to have helped a guy with the initials TW.
All the best Mike! Say hello to the Poipu Bay resort in Kauai, Hawaii for me during the Grand Slam of Golf!

Regards,
Steve