pot wrapped outside with foil fail

I would leave them alone; they'll dry out and die naturally due to the oxygen instead of cutting them 😅

Do not cut them........they will dry out naturally. Cutting may cause shock or initiate diseases. The leaves curling up at the edges is often the first sign of a magnesium deficiency.

Better let air and sun prune roots, than cover it with plastic or foil. Fabric would work if you still want to ;)

No problem. As soon as the roots come into contact with the air, air pruning occurs. You might know about fabric pots. Just pay attention to the lining, as it's not that great and can cause mold due to "sweating.