I haven't been in this type of situation. But I have certainly been in vanilla relationships that have lost its zing.
It sounds like you both are willing, so I would bet you just both need to relight the flame. Devote a weekend to getting back on track. If you have kids...send them off to Grandma's house.
There are lots of things you can do to get the creative juices flowing. Watch some movies....read a book or two....check out the Yes Master deck in the forums. Talk about things you used to do that made you hot (not in a "how come you never do ______ anymore??" kind of way....but a "Remember when we ______ that made me cum sooo hard" way). Exchange fantasies.
If you really work at being in full-on submissive mode for 48 hours, and he does the same as a Dom, you will probably fall right back into it.
Turn off the phone. Spend the entire weekend as just the two of you, reconnecting with these sides of yourself. It is no different than a vanilla couple having to take time to reconnect sexually.
I hope everything works out, and I wish you both the best.