[rday]

Pushing him out wouldn't be too hard? This sounds like a peach of a work environment.

I'm in a situation like this right now actually. However, I'm the lazy developer. All situations are different though, so I doubt I could help much with specifics.

My advice would be to work your hardest to understand this other person's point of view. Maybe they don't realize something that you do. Maybe the communication is bad. Maybe you need to rage it out for 10 minutes to find out, honestly, where the communication lapse is.

Unless they are just out drinking instead of working, it is very possible they are just not in the right place (in life) to work in a startup. That is a hard thing to admit in this climate, but it is very common.