Pinched mantle & freshwater dip

[Der_Iron_Chef]

This is what I found in the forum at clamsdirect:

"If the clam is firmly attached the only thing you can do is try to get the clam to let go.

To do that you can either:
stand and gently sway the clam back and forth, not stretching the threads, but rocking it back and forth and it will let go. this may take a while..

use an ice cube held against the threads and let the clam detach.

use a super clean, sharp razor blade and cut the threads as far from the gland as possible."