Hey there, Brad. It is up to the agent. When you say they are going to re-submit the paperwork it makes me think that something is very wrong. It take 90 days max to get a yes or no answer on a short sale offer. Someone hasn't been following up with the lender. I have found that if you don't call the lender, then nothing happens with the short sale file.
They agent has to "push" the file along. The bank won't "push" it as they have more files than they can handle. Bottom Line: I would find another house. Even if you wait it out, you should always be on the lookout for another home to buy. Maybe one where the agent has experience with short sales.