This actually works in the drivers' favor... hear me out.
By them eliminating these additional credited stops, they will lower SPORH. I would advise the driver to do as mgmt wishes, and still eliminate all send agains. Indirect all packages needed to eliminate send agains and record them as DUP per management instructions. When management rides with you for a OJS, make sure you do the same thing. You will still be taking the time and physical effort to deliver these extra stops, but now will not be getting credit for it in relationship to SPORH, so your SPORH will be reduced. As a result, the numbers that management can (try) hold you accountable to is lowered and more easily accomplished.
Make sense?