Tube anemone out of it's tube

[My tube anemone has crawled out of it's tube. It has been in the same spot for months, gets fed regularly ( in fact last night ) looks to be still in good health, bright colors, etc. Just that it has crawled out of his tube. It is standing verticle in the water, kind of acting like it is trying to crawl up the rock and maybe reaching back for it's tube with it's foot.

Should I "help it"? I somehow doubt that I can coax the foot back in to the tube. Should I leave it alone? What to do. Never had one do this before.

It is an anemone only tank, so not like there is anything in there that is going to harm it. Maybe a couple of peppermint shrimp pester it, but nothing that should kill it or anything.

Any suggestions?]
 
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