Distributor hold down

This seemed like the best place to put this, but if I'm wrong, please let me know. I bought a new distributor for the engine because the advance no longer worked on the original. A friend of mine decided to put it in for me and he says that he broke off the hold down bolt in the engine. I haven't seen it yet, and it may be a few days before I can get to it, but is there anyway that I can get what's left of it out of the engine without removing the engine? He said it came out just fine but the problem started when he was trying to put it back in. With how little room there is between the engine and the side of the car, is there any possible way to get in there and remove what is stuck in the block? Thanks for any and all help.