I haven't seen an online lisp in a while!
Anyway, the club has nothing to do with people scalping tickets. You should be grateful that they even decided to do a DC-date, because they could've just made you go all the way to Baltimore (not THAT far, btw) to see your Modest Mouse.
My advice: Suck it up, show up early on the day of the show, and just get a ticket from a fan in line, or someone that has an extra then. I've seen some of the security for the club try and regulate people getting fair prices for their tickets as much as they can, and it's VERY much appreciated.