Detecting collision between multiple players and allowing them to move each other?

[d1ddle]

Any easy way I could compensate for something like this:
//client 2 pushes client 1
//client 1 recieves client 2s onlinePlayerPos (the pushed player pos)
//override client 1 playerPos with client 2 onlinePlayerPos

It might be a stretch because the current system is peer-to-peer position passing and not passed through any 1 client..