Basically - correct. You need to save the tabs because they connect to the “frame.” And take a look at some of the control arms that come up for sale here. Look at how they have the bushing and shell of the bushing pressed into the control arm. You can over torque the bolts and snap the nuts off to release the squeeze pressure and honestly RRR is correct about getting new or better shape cam bolts. But if they do not come apart with an air hammer then cut like I suggested. But before you cut… make sure you understand what you are looking at 100% so you do not create more issue than what you have now.