I think it's going to take more than 2 or 3 weeks to get this sorted out and for a replacement frame to be delivered. Trek is great for warranty claims but they don't move that fast. The local Rep will need to make an in-person assessment and if he feels a new frame is in order, Trek will try to match the quality of the new one with that of the one being replaced - which means you are just as likely to end up with a repaired used frame as you are a brand new one. Either way, you are better off.
I also don't think you should ride it. Broken carbon, no matter what or where, is not a good thing. Check with the LBS for a loaner or a rental. Or suck up and buy that second bike you've been thinking about. Now is as good a time as any.
55/Rad