OP I feel your pain.... I thought I had the world loudest snorer next to me, he would have won the prize I thought.
I slept nearly every single night on the couch, or squashed in with dd in her single bed just to get some sleep.
Anyway I suggested insisted that he go see the ENT doctor as there is no way a human being could possibly make that much noise and not be murdered by me have something seriously wrong somewhere.
Lo and behold he was diagnosed with severe sleep apnoea and now has a cpap machine at night. Its bloody bliss I tell you, I sleep in my own bed every night now! The machine is a god send.
I made him try everything, nose spray, those plaster things, a funny metal thing that I have no clue how it should work, but it didn't, sinus medication, earplugs for me....
I only realize now after having slept for 3 months now without being woken up all the time, that I was actually sleep deprived.... I am so much less grumpy, I can concentrate better, I eat better (this is a good thing as I lose my appetite if I'm not 100%).
I think you should insist suggest he go see the ENT too 