He may have 'tapped' his bellhousing and messed up the crank sensor reluctor ring on the flywheel.
Check oil pressure with an oil pump pressure gauge hooked up to where the oil pump gauge sender is screwed into the block.
He ran that eengine at a high back angle for some minutes. Maybee the engine did not 'like' that too much.
DID you crawl under this Jeep to look for physical damage?
Do you know what was good about the good old days? I wasn't good, And I wasn't old!
Senators and Congressman should wear uniforms like NASCAR drivers so we could identify their corporate sponsors....