Yep,, if you loosen the "sideways" bolts. the stud girdle will come off. Then you will want to look at everything pretty close, including the rocker stud. If the rocker just failed, you may not see any other problems with the other valves and rocker arms.
I imagine Chris told you what to have the springs installed at, so you may want to verify that with the shop that did the assembly. I guess you really need someone with a little more experience to take a look at what's going on.