He afterwards escapes with the aid of an army of angels despatched to rescue him - getting in the beginning remained powering as penance for his steps to prevent a duo of Leviathans that were being seeking to assault Dean and Benny as they left Purgatory - but the other angels not only erase his memory that they ended up liable for his escape, but also erase his memory of their subsequent 'check-ins' to talk about the Winchesters' steps, with.