Can't open door...Help

My 2c worth..

If you can get at the back side of the door striker bolt, use a dremel tool with a flex shaft and a cutting wheel to cut off the end of the bolt thats exposed. Make sure its cut flush to the sheet metal. use a center punch if you can to mark the center of the bolt, then , use a very small drill bit in the dremel tool and drill a hole in the bolt. Start with the smallest bit and work up to the largest bit the shaft will accept. 1/4 I think. Then you should have a big enough hole to use a diamond tipped dremel grinding bit. Use this bit to grind out the rest of the bolt. Striker bolt will fall out and door can be opened. I've done something similar. Long , tedious time consuming process but at least the door frame and door jamb sheetmetal stay intact and undamaged. By the way, keep bits cool with lubricant of some sort, WD -40 if nothing else.

This is a desperation , shot in the dark procedure at best but.. better than no option at all.