I've worked on freeing suspension on loads of older cars and it can take hours and hours if the bolts are frozen. Heating, banging, putting my entire body weight on extension bars...can be a really horrible job. Then you find when the bolts are free they turn the remains of a bush and you need to replace the whole lot. Not surprised the alignment place did a limited alignment.
Anyway, Plusgas is much better than WD40 for freeing frozen bolts, if you are mad enough to try this at home.