His “episode” needs to be checked out by someone who can run tests and make sure that he didn’t have, and/or isn’t about to have, some major issue. Now that Hillry mentions it, I’ve known several folks who had that “felt crappy for a short time but feel better now” situation. When they got it checked out, often (not always) they’d had something significant happen that needed followup. Hog-tie him if you need to, or call the neighbors to help, but don’t let this slide.