User blog comment:FairyRaven/Fairy Tail Chapter 344: Wizards vs. Hunters, Review and Commentary/@comment-4890977-20130719151736/@comment-5840892-20130719182636

Here's the reason Raven (it's three little words):

Rem Blackmailed Mashima.

If anyone has a better theroy, then please give it.

And the infamous Roswel Incedent in 1947, that was no mystery anon. It was a goverment cover-uo, and everyone knows it.