That's Sparkle Green. Dan Green's wife...... She's cool as heck. No doubt just trying to help hold him/ the chair down. It looks pointless until a chair flips while you're getting wrapped.
As for the squat - I'm a multi-ply guy. I rarely follow raw lifting and never follow single-ply. But without a doubt, Malanichev is the best squatter in the world right now. That was absolutely amazing.