If they do the it'll probably because of this admission on the part of the Secretary of State's attorney: "The Justices seemed to get Kobachs lawyer to admit that substantial compliance may sometimes be enough. With that concession, there is a relatively easy path to finding the letter substantially complied."
It really doesn't matter. Everyone in the state knows Taylor has resigned; he's down to 6% in the latest polls and dropping fast. In fact it might be less advantageous to the Dems if the court orders his name removed AND force the Dems to name a replacement. That would be more confusing.
How can they force the Dems to put someone else on the ballot? Senator Sessions is running unopposed in AL.