ok no he didn't mix RP, we PM'ed each other, and he said that through the PM which was OORP, he never mixed chars.
Basically, after he switched to another char, I kinda guessed who he was, and I sent him a PM and saying it wasn't fair and what not, he said either way he would've switched chars and ordered me to stand down.
I guess I should've made it clear it wasn't mixing in RP.