This is a public service post for all the people who find me by Googling something like: “taking potholder off loom” and for the one or two people who have left comments asking me how to take it off. It is really quite easy:
You will need the hook that came with the loom or a crochet hook.
Start at a corner and pull the second loop in the row, through the first loop. Then you pull the third loop through the second, the fourth through the third, etc. etc. all the way around the pot holder. It will be kind of a linked chain around the edge like in the photo.
You will eventually end up with only one final loop. That is the loop that you can use to hang the potholder on a hook.
If you have any other questions about it, feel free to comment or email me (my email is in the right sidebar).
Hope this helps!