Peppermint shrimp eating out of my anemone??

As some of you know, I've been running my tank fallow for 5 weeks now because of an ich problem.  I've been lightly feeding the main tank to keep my shrimp, crabs and anemone happy.  Today I target fed my RBT anemone a large amount of mysis and saw my largest peppermint shrimp crawl INTO the anemone and grab mysis 2 or 3 times!  It was done by the time I got my camera downstairs, but I thought it was insane that the shrimp went in there and didn't get stung and eaten.  Maybe the shrimp exoskeleton protects it enough?  I'll try to get a video of it the next time I target feed the anemone, although this is the first time it happened in 5 weeks.