First of all, you have *#*, which is unnecessary. Just use #.

Second, if someone else is kicked, you shouldn't try to join the channel... that line will do a /join even if you're already on the channel.

Third, if you or someone else is kicked in any other channel, you'll try to join opwars even if you're already in it or if you're on another network.

Code:
on *:kick:#opwars: {
  if ($nick == $me) {
    join $chan
  }
}