Therefore there exists the possibility that the "problem" as you describe it - namely the weather/turbulence situation and how to avoid it, may have been considered as solved in the mind of the PF with the PNF's lateral course change.
Solved? I don't think I'd give that interpretation a very high probability.
Crews usually consult on the best route through weather. The process has enough variability that you would never consider a weather problem solved until it is behind you. Best you can hope for is to achieve the least hazardous route.