User blog comment:Omega natsu2/Chapter 372: Breach, Predictions./@comment-7418318-20140217101213

Let's use up the last "prediction slot" for FT:

-After getting "uncarded" Makarov made a Lacrima-call to the other guilds.

Fairy Tail already contacted other legal guilds to help cover the former councillors, so it's clear Makarov doesn't intend to fight Tartarus alone. Now that they finally know the location of the Demon's headquarters it'd be the natural choice to tell their allies the location. And of course he can't talk and fight at the same time, so he stayed put for a moment to make the calls, while the other mages in typical FT manner charge straight at the enemy.