Tensioner locked up

[BruteNasty]

anyone ever seen this? it kicked my ***.

When a/c is turned on, theres a terrible noise, didnt sound like it, but ended up being a belt noise.

the drive belt tensioner was locked up completely loose some how. it was so locked up that when we put a 1/2 breaker in it to try and break it free, the tensioner broke where the 1/2" goes in. its off the truck and still locked completely open