Manga News: Check out this week's new manga (10/13/14 - 10/19/14).
Forum News: The nomination phase of the Community Awards 2014 is live! Visit new sections for Nisekoi and Kingdom!
Translations: Bleach 600 (2)
It will be near impossible that the author cared so much about this story and than forgot something FUNDAMENTAL like how Berthold could escape after the re-transformation.
He highlighted this topic in a recent chapter too (can't remember which one) so I'm pretty confident there will be not a plothole about this ^^