I've had the most amusing day trying to catch this thing! Paintbug, that is exactly him!!!
First I tried the bottle trap (cut top off water bottle put it back in backwards with piece of shrimp in it) yeah, well I caught my peppermint 3 times, seems he thought it was a game. Needless to say with the peppermint in there the crab who had been interested in the setup, wouldn't go in.
Next I thought maybe I would bait him out with a piece of shrimp on a bamboo skewer, a shrimp kabob if you will. I learned several things from this. First, he's a strong little guy and requires wrestling. Second, he's quite fast. Third, I am not coordinated enough to crab wrestle and net him at the same time. This probably would have won me something on Funniest Home Videos had anyone filmed it.
I then moved on to trying to blast him out with hot wated in a turkey baster. Not so much. This technique didn't seem to phase him one bit.
I'm now down to 2 options, either remove every last bit of lr and all the corals from the tank to get to the largest bottom most chunk of lr that he's living in, or, I re-purpose the bamboo skewer and spear him. I'm not particularly wanting to destroy the little guy but he's tearing up stuff in my tank. So far my Pulsing Xenia and a button polyp have fallen victim to his wiley ways.
Anyone have any other ideas?