In theory yes. In practice it seems that whether the controls are connected or not, if the PNF lacks the confidence to assertively take control and keep hold of it then you're going to be in trouble.
Also, modern connected controls don't necessarily do what one might think - the NTSB found that in the EgyptAir 990 case, with one pilot pushing forward on the column and the other pulling back, the result was actually a split-elevator condition which seriously impacted the aircraft's stability.