User blog comment:FairyRaven/Fairy Tail Chapter 365: Fairy in the Jail!, Review and Commentary/@comment-4933386-20131230040724/@comment-7418318-20131230102720

The thought projection business makes it less likely but not impossible.

While Jellal was using a thought projection most of the time, we have no sure garantee that he always used it. Maybe when he first came to the council, he had to show up in person.

Or maybe the seal latches onto the magic and thus connected with Jellal himself, or got transfered to him when he re-absorbed the projection.