From first hand experience I can tell you it can get a bit overwhelming at times and shipping out some packages can be the lowest priority. Now obviously you shouldn't commit to a deal you can't follow through with, but shit happens.
Even the best of members can make mistakes and fall behind.
I'm sure he will get it fixed up and made right. Best wishes to him straightening his life out. As someone that's been there, I know how tough it can be.