Thanks for the thread!
I got it off! I think the main spring in the middle was pushed down and damaged in the down position. So, the safety latch was already unlocked. Unfortunately, the valve is toast.
I took a 1/2" fender washer put it in between the (2) tabs used a flat head screwdriver put that in the washer hole and turned counter clockwise. It gave the right amount of torque and twisted right off.