One problem with reinitializing that replica is that since it's successfully receiving changes from everywhere else and not sending its changes outward, it's the only one that has the most up-to-date data.
For what it's worth, the topology is that at each of my PoPs, I have a pair of replicas that are replicating with each other, and each of the pair is replicating with one of the pair at the neighbor PoPs. The PoP topology is basically a ring of 9 PoPs, call them A through I. Then there are another two PoPs that connect A and E. Then there are leaf PoPs that hang off of B, C, H, and I.
If that's not clear, let me know and I can draw a diagram.