[quote=@Lucius Cypher]
Would it be possible to use a Shove action as me AoP?
[/quote]
RAW no, that won't do. We can make shoving and grappling as an OA a thing, but that may not exactly end up being to your liking down the line. Taking a bit of damage is one thing, but getting your entire move cancelled by a mook successfully grabbing you makes both bookkeeping and planning turns ahead for post fluidity somewhat precarious. I'd default to no on this one, if mostly for the convenience over our chosen medium.

[quote=@Lucius Cypher]
Plus give Brannor advantage if he goes after the guy I know down. 
[/quote]
You do realise that the opponent could just rise up on his feet instead of crawling past Brannor, yes? :lol