Board Thread:Manga/@comment-5774380-20160109013258/@comment-26932251-20160109032741

OH YEAH! When he's talking to himself as he pulls the blade out of his neck, he is mentioning that apparently he transferred his neurological functions to his body but he doesn't actually state how many of his neurological functions.

Eh, at this point Reiner's future looks like a toss up, it will be whatever Isayama decides it will be but knowing what we know now, it could mean that Reiner is partially 'gone' but still had enough cognition to send the signal.