Regardless of how he recovers and how his body handles the rest of the season, I think this surgery could/should be a major turning point for Tiger in terms of the events he chooses to play in.
He already has a pretty light schedule, but I definitely wouldn't blame him if he went to more of a Steve Stricker type schedule, where he pretty much only plays in the majors. Add on to this maybe one gear up event before The Masters for a little taste of competitive golf, his own event at Congressional (I'm guessing he's obligated to play in this if healthy?) and either the Ryder Cup or Presidents Cup if selected.
I'm guessing he wants to surpass Snead's record before going to something like this, but if he wants to keep playing for another 10 or so years, I can't see how he does it while still working the schedule he has now. As much as Tiger loves golf, I don't think he's the kind of person who could handle spending his last thirty-odd years in a wheelchair.