We do have an area set up that separates him from the girls when we're not home. The original purpose was to keep him from having diarrhea accidents on the carpet, but now (thankfully) his bowels seem to be in working order again, we may continue to use that area for the reason you describe. I don't picture Dazzle starting anything, but Ali might. And Dazzle is a real follower, so you're right, that could get ugly.
If the episodes seem to become more frequent, it may simply come to the point where I'll bring him to work with me every day, just to keep an eye on him.
For now, I watch and wait. And love on my big handsome boo-boo boy every day.