Spun rod bearing. Welcome to the club. Mine spun at 120k.
I don't know what your financial situation is, but since you have the engine out you might consider throwing in some cam bearings and if your cylinder ridge isn't too bad, a set of piston rings too. At 120k, my engine had no ridge whatsoever - the pistons pushed right out. I just used a glazebreaker to clean up the cylinder walls a bit and put new rings in. And since you'll be down to a bare block, you might also want to have it boiled to get any babbit material or other crap out of there. You're bearing wasn't too bad, but ya never know.
My philosophy here is that you have the engine out, you might as well put one back in that will last you another 180k. You could probably buy a used engine for less than this rebuild, but you won't know what you're getting.
Of course, I only got 76668 miles out of my rebuild.
(Totaled at 196668.)