Ummmm....what? The snubber's "job" is to plant the tires on the track. Period. It has no other function whatsoever. Pinion angle is a static measurement that should be 5-7* nose down in relation to drive shaft. Per the Mopar Performance Chassis Manual.
That's entirely possible but would have absolutely nothing to do with pinion angle. If the snubber was deteriorated, then it was not working to its full capacity to plant the tires and that was causing the problem.
Mopar Performance actually does not recommend a snubber with SS springs on an automatic car. Although many people run them with success, they are not necessary. I did not see you specify auto or manual. Maybe I missed it. If you have the SS springs already, they come clamped correctly unless they have been modified. Those SS springs are designed to be used with the stock spring hangers in the stock location. Flipping them might open another can of worms. Instead of guessing, you need to iron it out like it is supposed to be, then make mods from there or you may never find the problem.
Sounds like a plan.