I think that the world keeps getting a little smaller. By that I mean that if I ever hear about someone that does this sort of sh**, I will not deal with them. I won't recommend them for side work, or give them the time of day. Much worse, I am more likely to say he is not to be trusted.
This community, or the 4 wheel community, is really small. I would just get on the boards and out the lazy looser and tell him to work it out quickly, because you hate being in the middle of this. We all know you and respect that you do the right thing.
fwiw
On another subject... need to talk to you about the wifes exhaust and.. drum roll... I have been workin on the 68' finally.. Pics up soon. Been busy.