That sucks man. Sorry that happened to you. It could be a bunch of things. From simple to bad. I would put it on stands and pull the plugs out and try to free her up with Marvin's Mystery oil. Put some in each cylinder and let it set over night then try to turn crank with wrench. Might need to repeat several times before braking free. May not ever break free.
While it's up try to find out were oil leaked from, front, rear main seals, crack in block etc..
Hope it works out man..
