Now there isn't any incentive to have Sorensen in. The damage has been done. He won't offer anything going forward, which is what we need. Although it doesn't seem like Motta offers anything there either.
Pepe for Motta is a better option, we'd have more ideas and more speed. Then if things get better, Sörensen can come in for one of the midfielders and switch the balance back.
As I said, damage was already done with Motta. Pulling him off now would kill whatever confidence he has left. Sorensen wouldn't add anything going forward. Pepe can't be trusted back there in this situation.