User blog comment:Miskos3/Fairy Tail Chapter 367: Jellal vs. Oracion Seis, Review/@comment-5268982-20140117180324/@comment-24066070-20140117192932

I think the best person to restrain Elfman would be Bickslow.

His human possession, perhaps combine with Warren's telepathy may be key to releasing Elfman from Sayla's control.

Though Bickslow is likely still recovering.