Is this clam in trouble?

[i have crabs]

I've done it to a squamosa a few times over the years always worked like a charm if things didn't seem right, about 15 mins I think I did, google freshwater dipping clams lots of people do it usually for pinched mantle issues but I thought my clam was gonna die more than once and it saved it, better than tossing in the trash in a few days but that's upto you