in the shops that I've been in (worked in, helped in, drank a few beers with the wrenches in) We'd just take our 'Frame allignment tool' (which looks an awful lot like a 2x4) and bend that back into place. Your wrench probably did much of the same. No real problems with non-oversized steel frames, especially midway up the seat stay (not a whole lotta pressure at that point, and the metal is plenty thick.) Looks like your wrench was quality enough to do a decent dropout allignment, too!