I suggest using NRPN 1035 to turn Local Control on an off remotely.
Unless one frequently must use DAWs that don't support NRPN...
And also, using NRPN sort of implies the synth must always be connected to a computer in order to turn Local Control on/off without menu diving. And this is most definitely NOT the case (in fact, it's the very reason why the synth itself needs such an, umm, "local" methodology to quickly switch Local Control status).