As I understand it, the Dems get to define what qualifies as "extraordinary circumstances," not you, not I, not FR --not even John McCain. Don't recall whether they've said it explicity, but I'll bet an anti-Roe record counts as "extraordinary."
No, the entire "Gang of Fourteen" defines "extraordinary circumstances", though ultimately the decision to filibuster based on "extraordinary circumstances" would be sold one way or the other by the Democrats' allies in the dying, socialist "mainstream" newsrooms, which now have considerably less inflience than they once had.
But WE conservatives would have Bush's back, and WE are formidable, to say the least. I maintain that there would be no filibuster but that even IF five of the seven Democrat members of the "GoF" were pressured to bail on "the deal", the Republicans would ultimately prevail in the attempt to "go nuclear" in response.