There is something very wonky with the timeline. Bran's ability to see elsewhere expanded into the past and has expanded to the point that he is able to influence events. Hodor end up becoming a predestination paradox. He got Bran to Bloodraven, only so Bran could go back into the past to make him what he was, so he could get Bran to Bloodraven.
Wouldn't be surprised if Bran's fumbling with this power causes a cascade of terrible events happening.
I also wouldn't be surprised if the corpse of Hodor shows up in the White Walker Army at the end of the series.