Trying to understand an odd behavorial/sleeping pattern.?

So my boyfriend and I just moved into a new place about a month ago (we also both work 3-12hr graveyard shifts per week and have been for about 8-9 months now). Since we moved he's also gotten x-box live and has been complaining that lack of sleep has been caused by the clutter in the new house that has yet to be organized. He's gone the last month with 4-5 hours of sleep to last him for 2-3 days and has remained fully functional i.e. he was awake from a Sat at noon and did not return back to sleep until early Monday morning at 5am. Its really strange and quite irritating to see such a radical change in his sleeping pattern (we've been together for 2.5 years). Again, this has happened for a month. Now, this last Thurs he fell asleep at 5:30pm and did not wake (actually purposely wake) until Fri for work. At work Fri he pretty much slept at the desk all night. Sat morning he went home and cont'd sleeping until 5:30pm (when I woke him he was EXTREMELY pissed off and has cont'd to be a jerk all night) -he slept in the car on the way to work, he is also sleeping at work today. He's practically been sleeping from Thurs early evening through Sunday (today). It almost feels as though the more sleep he gets or tries to get seems to aggravate him more. I'm not sure if this is something I need to worry about and I would appreciate any input out there.