I haven’t found a way and don’t think it’s do-able.
The physical pitch control only affects the GUI Pitch Control at the point where the two are aligned and synced, you then have full control back.
If the two controls are not synced, as soon as you start moving the physical one on the controller, the GUI will show you two pitch controls on screen (one is slightly greyed out - that is the controller slider), when the controller slider is over the on-screen slider the two ‘link’ together, move in unison, and you have full control back.
So if your on screen BPM is at -2% and your controller is at +2% no amount of moving the slider will have any effect on the system until you move your physical slider back to ‘pick up’ the on screen one.
Until a software change is implemented what you want to do is not possible, mainly (IMHO) because if you had a track on -5% and you needed to increase the speed to +10, if your physical controller was already on +5% your slider would be at its maximum and the on screen deck wouldn’t be, hence why the two things have to be synced up to ensure that the max / min of the controller’s slider match the GUI and ensure proper performance.