The problem is that we don't have a viable replacement option. Rutledge and/or Marrero, while better liked, are not the solution to our 3B problem. Pablo might not be able to turn it around, even a little. Dave Cameron makes a very strong case against Pablo being able to turn it around.
However, I think that Farrell needs to play him regularly for several weeks to see what he can do. Playing him for one game and then benching him for 2 or 3 does not give him the chance to gain any consistency.
If the team is going to keep him on the bench most of the time, they might as well DFA him and call up Devers or recall Marerro, because Pablo is just taking up a roster spot.