It’s not the syndication, it is still in seasonal repeat. That is his contract and he has an obligation to let that run until the new season begins without him. That has been the delay.
As far as syndication, they will have to pull the episodes with him for equal time until this is over. just like Arnold in CA.
I don't think that's the case, because I see movies with Arnold in them all the time on cable. I think it may only have to do with shows that are first run, or are re-runs on the same network on which they originally appeared. In that case, as soon as the new season of "Law and Order" begins, he'll be free to engage in a full campaign.