Don't let that feeling he's about to make some kind of decision make you start asking questions. IMO, this is the time to really take the pressure off and let him feel comfortable. I agree with others that he is working toward the M. Maybe your celibacy comment reassured him that you still want him after all that's happened? Sounds to me as if he wanted to linger a little with you before his trip, and he's been thinking about what you might be doing while he's gone.
I think now it's more important than ever for you to act happy about life in general and optimistic about the M (without any R talks).
We're both afraid to hope but it's the only way to go. I have even felt a subtle 'shift change' with my H in the past week, but like you, I'm afraid it may be my imagination. H is being really considerate and seems to be going out of his way to be thoughtful. Just little things but they're the type of things that seemed to be a huge burden to him during the MLC anger stage.
It's hard to see the progress from where you are, but to an outside observer it looks good.