That sucks......Leprachauns are on my "must have" list. Coral Rx dips have sometimes worked for me and moving to a different location too. Watch for a buildup of algae or the dreaded brown dust on the polyps. I use an artist paintbrush to gently brush them off if needed. I have a couple of frags of salted agaves that have looked like that for 9 months now and never change. I've tried multiple locations of flow and light, but nothing. They don't look dead though.
Good luck, those things are beautiful.........when they open up