Just from the highlight vid (didn't watch the game) he looks very different - when did he ever pass so much, react so quickly and move so much? and quality passes too. Feels like he was way more involved in the game than usual. Good signs.
When/if he's that good ATM, I'd start him even if Ox is ok. Let Ox play himself to form and earn the place, and keep Campbell as long as it's working - both improve him and give him what he deserves.