> Second, and this is the most important point, because it's come up again and again in the comments, he is consistently missing deadlines and has failed to be very productive.

So I wrote a pretty harsh post previously before this little bit of -very important- info was added. Not getting things done while not working full hours is WAY different than getting things done on an unusual schedule.

Odd hours + Productive = OK / expected

Odd hours + Not productive = Dead weight

Good luck.