Could be ... I never had a really bad snail problem. The most I'd really ever see was 2 snails at once, but usually I'd see them every day.
I also did a lot of trimming while I was at it and found two caches of snail eggs encased in some rubbery "adhesive". I pulled those out and that may have cut down on future snail population too.
I'm going to keep watching it for a few days. My fish went back in the tank the other day, and my gold barbs actually regard small snails as a treat, so they may finish off any that survived.