Here's the Walton video.
It's a big deal over nothing. You can see him putting him hands in the air and not doing anything back while the woman is grabbing him.
https://www.miamiherald.com/news/local/community/miami-dade/article228167744.html
This sounds like nothing much actually happened. "Battery" sounds a bit excessive for trying to grab someone's phone.
Walton has always had excellent character and I'd give him the benefit of the doubt.