The main problem with banning commercial crabbing for a season is that you put the very large and important crabbing industry in some economic trouble. Many crabbers can't afford to take a season off. Either the state or the federal government could pay crabbers not to crab like they do with some farmers, but that would be a hell of a bill to get passed.
Common sense is in short supply right now. Especially when it involves having another bill added on to an already large deficit (in both the federal and state cases). It still has a chance of getting passed, but the far-right will scream bloody murder the whole way.