I've found that I can apply a decent amount of pressure when hand sanding out pitting on wedges prior to polishing them, but I found that recently I was hand sanding an extra hollow ground to remove some light rust (and I made a point to use what I thought was light to very light pressure on the hollows when sanding) and sakes alive did I warp the edge! The blade laid flat across the edge on both sides of the blade prior to my work (easy honing....nice! but after my sanding, it did not lay flat (spine does, edge was bent out of whack in the process).

Based on my personal experience then, I would just caution you to be extremely careful when you sand out the hollows of that razor.

Chris L