It's no longer showing any of the same behavior. Dss is totally dead, and the IRQ counts look semi-sane (except for the wifi... that looks a little high still). Is it still exhibiting the drain problem?

It may in fact be an external cause, like a bad wifi router or bluetooth device pegging it. I once had a stale password in for a wifi router, and with the auto-connect attempts every 5 minutes or so it ate through half my battery in about 4 hours. Maybe something similar is happening?