I was being a complete idiot and manged to crack my Trek Matrix rim when I was adjusting my brakes, I was trying to bend the calipers to align them right and had the pads off, instead of bending they just pulled towards the rim and it cracked on both sides of an eyelet where the calipers hit it. I know I [I]should[I] replace it but I got them on CL and there's no way I could afford anything half as nice to replace. What exactly happens if the spoke pulls out, how much will it throw my rim off? Could I take that spoke off and tension the other two a bit more to make up for it? Basically, is there any way I can still use this wheel even if it won't work as well? If not, what about rebuilding it? I've never built a wheel before a on't hve a trueing stand but... is it the sort of thing I could figure out with a lot of time and reading, or can I not get around needing the truing stand?