they usuallu will bury in the sand and pending species foot will go up under a rock, what lighting are you using, and id turn power head down, hate to lose such a beauty to a powerhead
if you EVER need to get its foot unstuck. use a credit card but be very gental you can hurt it. and its a lovely carpet you got there wish you the best and hope it doesn't go near that fan again!
My carpets usually buried their foot in the sand. They like room! So if they can open with no obstruction like rock it probably will not move. Nice carpet!