I think he meant in the "promote fun"-kind of way. Not in the "we're scared we're going to lose everything so we'll make friends with one of our enemies"-kind of way.
Oh yeah, because when the Northern Alliance was trying to sack Barad Falas Eston was in major danger of "losing everything." What the heck, man?
If anything, making friends with Coria presented the possibility of both Darka and BoM turning on Eston and THEN Eston losing everything. How in the world you put together Eston pissing off all her allies as the "safe" route, as opposed to continueing a winning war against Coria, I do not know.