I would have liked to have seen them actually confront the marriage and get rid of it. After the death of May, and with the word being out on his identity, Peter and Mary Jane just can't handle being together anymore. Peter wants MJ back, so he does a few things to try to cover up his identity again. The groundwork was already being laid for that thanks to the Scarlet Spider Squad who had said that Peter was a team-mate of theirs who had been kicked out. Have Morlun absorb some of Peter's powers and, voila, no more Totem-Spider powers and he needs the web shooters again.