I will definitely take these tips in tonight's arena. I usually ran windwalk against any Mage team, but I will definitely try Earth Grab.
Vs mage teams go windwalk totem, especially if you have a melee in your team. If you are able to use it offensively (for example right after healing streaming and/or grounding, and reset it with Call of Elements) you can get that extra pressure to force the block. If you're with a warrior, coordinate it so you don't use it the same time as bladestorm.
Since windwalk totem immunes the pet freeze, mages can't get fingers of frost from it. If he pet freeze while the totem is up obviously