You mean that someone actually opened up that frame, inserted something to lodge the handle/trip works in the closed position - eliminating the Breaker's ability to Trip-Free, then managed to put the whole thing back together again - all while it's in service!!!
Find this Joker and put a Straight Jacket on Him/Her ASAP!!!
Wow! Just when I think I've seen / heard 5150 extremes...
Looks like a GE 225 Amp Frame Size.
Scott35