If Boc is only gone for 2 or 3 days, then I don't think we should call in a pinch-hitter. Gb's a friend of mine from the civ3 multi-team game, and we're on the same team in the civ4 multiteam game* as well. I'd rather 'use' his offer of assistance if one of us has to take a prolonged absence. If he plays Boc's save for a turn or two (which is the most I imagine we'll accomplish in 2 or 3 days) then he may feel less able to step in for someone else's game should the need arise.
In that same vein, it seems likely that my girlfriend will be taking "our" computer with her on a business travel dealy for about a week. Hopefully I'll be able to play from my work computer, but I may ask one of the guys I work with to step in for me for that week. I'll let you all know more as I find out. In any case, my lack of home compy won't hold up the game.
*These two games have taught me more about the game than I ever thought was possible. If you enjoy playing civ4 or civ3, you should think about signing up. There's not nearly as much time commitment as a regular pbem, as you just offer your opinion on what actions the turnplayer should execute when the save comes around. Plus, playing against 4 other teams of the best civ4 and civ3 players around is exciting in itself!!