Broken pvc plumbing for bathtub faucet.

Question

Last night my 3 yr old grabbed the bathtub faucet, and proceeded to use it to lift himself out of the bathtub. He ended up breaking the faucet clean off. The remaining pvc is still sticking through the bathtub/shower wall. I need to replace the pvc tubing coming out of the wall. The only way that I can see to accomplish this is to remove a section of the drywall on the opposite side of the wall; so, that I can gain access to the plumbing joint to facilitate making the repair. Am I right in my thinking? Please let me know.Brian