Still wondering if anyone has any tips for his homecoming. Act As If? as if nothing has been wrong and approach for big hug and kiss, and tear his clothes off when we get home? (previous history) Act As If? continue as we have before H went on his trip, keep a physical distance, wait for him to make the first move.
This comes from some personal experience (remember, my W went on vacation with OM and then, for about 12 hours, broke up with OM), I'm betting he will be tired. I would help him get his stuff unpacked and in the wash, tell him you are glad he's back, and then go on with your evening as if he was never gone. Meaning just do whatever you would be doing normally. I'm guessing that he expects pressure from you upon his return. I would avoid that since he doesn't seem to react well to expectations from you.
Now, if he wants to tell you all about his trip then that would be a great opportunity to mirror, validate, and do all of that nice conversation DBing stuff. Heck, if he is in a really good mood it might be a good time for a little bit of seduction.
But that's just what I would do. Who knows if that is the "right thing" to do.