re: GoT "Middle Ground" Thread - Between Seasons Edition ***Spoilers Possible***

Hordor question: Did they attack the Wildings because they saw Jon Snow bring the dragon glass and trying to make peace with the Wildings? Or was it just a coincidence that Jon happened to be there right as winter came? I like to think those horseback ww were spying the whole time and "made" winter come because they didn't like what they saw with the peace talks. And that if they attacked right then they could secure the only known dragon glass. Or it was all just a coincidence?? Hordor out.