You actually mean prior to the match Carver changing team after Pardew's picked and trained with it during the week? If so, that would never happen.
If you mean during the game, of course he can, he'll be in charge.
I kind of assumed Pardew would be down the pub watching some dodgy foreign satellite stream with his iphone strapped to his 'shell like', barking orders out through a pitch side loudspeaker.
Is this wrong? Does a stadium ban mean no communication whatsoever?
A criss cross of tunnels is being dug under the pitch as we speak.