Your expanded data makes me more certain your mask removal is actually a central apnea, and may be (this is a stretch) a form of complex apnea caused by CPAP pressure. I base this on the seat of my ass and what I'm looking at. :lol: You are fast asleep as shown by the breathing pattern. You just stop breathing, and it's usually on the exhale. This may be due to how your body is responding to pressure, in which case bilevel might help; or it could be CA in which case you need to be induced to breath (ASV). I dunno.
Good thing to bring this up with the doc, but this is more than simple noncompliance.