Orcus faking his last breath, then popping out of his body to attempt to take control of ours. That, or attempt to fake his death and after Drusilla walks up, Orcus would hold her at the Scythe and have us surrender ourselves. That's when our Avatar pops out and says "no", and then Enshrouds us, which is where we learn our capstone skill as we beat the guy up again.
Unfortunately, that didn't happen as I expected. Apparently we were just that strong that we just destroyed them pretty quickly. Felt a bit anticlimactic to be sure. xD