NHL Goalie Corey Crawford -- Water Bottle Accuser Backing Down ... Refusing to Cooperate with Cops

Seems like Chicago Blackhawks goalie Corey Crawford is gonna be OFF THE HOOK in his alleged water bottle squirting attack ... TMZ Sports has learned his accuser is backing down in a big way.

We broke the story ... L.A. Kings fan Clark Wong filed a battery report with the LAPD after Crawford allegedly sprayed him with water during Game 4 of the NHL Playoffs earlier this week.

Now, law enforcement sources tell us ... officials have reached out to follow up with Wong, but have not been able to reach him and he's not returning calls.

We also spoke with Wong who told us he no longer wants to pursue the case.