Well, it's not like they came over to the side of Jesus on this. It may be too late to substitute Moore with another goper on the ballot, but it's probably not too late to organize a write in campaign to keep the dems from taking the seat. Luther Strange is a pretty crappy candidate, but he hasn't molested anyone that we know of.
It's unlikely a write in campaign could work at this point. The reason why it worked for Murkowski is that the Democrat was a non-entity, and she had her father's political machine to push her past the Teabagger who won the primary.
In this case, the Democrats have a strong candidate, (Famous for prosecuting the Klan guys who bombed the Birmigham Church) and Luther Strange is kind of a knob. So a write in would just split the GOP vote and let the Democrat win. But that's probably going to happen anyway.