Gave Phoenix an Epsom Salt bath last night (thank you for the information all), and while he seemed annoyed at me for moving him, he was not looking sick-upset (if that makes sense). There was not much in the way of information on acclimating between a bath and his tank, so while he got dropped in to the bath (the temp was pretty close between the two tanks), he was re-acclimated into his 5gal red-tank. Also had a chance to feed him cooked shelled pea-bits while he was in his little bath.
In checking on him this morning, he was hiding in his little pyramid, even when the light was turned on. He has always liked to hide in his little spots, so while I am not too concerned, I will still keep an eye on him this eve.
Am planning on giving MZ an Epsom Salt bath tonight (Before an international con-call) while I change out his water, and see how he feels about relaxing to hopefully unplug himself. Comically, he is very much the "Cranky old man" of the bettas. Think: "Get off my lawn you darn kids!" type.
If they start improving (or not) is the Epsom Salt bath something that should be repeated, or is the transition mayhaps a bit stressful on the fish? I am constantly learning new things about these lovely little guys, and wishing I knew all this before I started, as I hate to cause harm to them.
Thanks again to all for the advice. Incidentally, what is a hex?