Errr, I should have said "(gently) throttle down", since that's potentially in the menu of options for liquid fueled rockets. What you're talking about sure so

Errr, I should have said "(gently) throttle down", since that's potentially in the menu of options for liquid fueled rockets. What you're talking about sure sounds like an inherently violent deceleration. And the tops of those SRBs are uncomfortably close to the tank and the LOX tank in it at the top.... As you say, "a bit iffy", at the very minimum.