Sounds pretty scarey!
I would drill the bolt out of the pump case, using a left hand drill bit,
or drill it indersized and use an easy out.
I would then check the plungers for cracks, and inspect the head of
the pump. If the head itself is not damaged, the next step I would recomend is replace the complete packing assemblies (Interpump Kit #28 3 required per pump) this contains the brass packing retainers, packings etc. items #43,44,44, 45,46, and 47.
Click here for TS 2021 pump breakdown
Feel free to call me today between now and 4:00 PM,