Anyway, I gave up on it for about a week and came back to it this morning. Although it wasn't even going to te google boot animation, just stuck on the google logo. So I reflashed stock 4.4.2 again. Now I'm back to square 1. So it boots and will function for maybe about a minute or 2 (or less) before freezing and rebooting.
Is this device shot? I'm out of Google AND ASUS warranty now