In the mean time Wenger needs to control what he can control....and that includes getting his players to not fall for the antics of chumps like Costa.

As has been said many times already, Adams/Keown would have smiled graciously at Costa and the ref, his assistants/officials/linesman, his wife and kids, anybody they needed to and then 'done him' later in the game when every person in the stadium didn't have 100% attention on them.

If you must be cynical and get it out your system, that's the way to do it.