User blog comment:Noctosphere/Why did Mary come back?/@comment-29408332-20160831224138/@comment-1975828-20160901031922

Nothing to do with Carver, the last two episodes of season 11 were supervised by Andrew Dabb, weren't they? Bringing back Mary was most certainly his idea.

But I agree, pretty much anything can happen at this point, even if it doesn't make sense, like Castiel randomly getting his powers back and being able to best an archangel. XP