This is so true. Was in my case anyway. Twice, nights before the divorce, X suddenly began bubbling and bawling regret and remorse to me over the phone. She didn't follow up with any requests or hints at reconciliation, so, I didn't bite. Just let her go on. Felt like she was doing it only for herself, anyway.
In the end she did nothing, postponed nothing, changed nothing. Divorced me right on schedule as cold as ice.