Means the Dem seven can vote to uphold filibuster on Saad and Myers without breaking the agreement.
The "extraordinary circumstances" clause would not apply, since that is only for future nominees.
And it also means that Graham and Dewine (and any of the other five) CAN vote for the nuclear option. As I've said, Saad and Meyers' status is the same as it was yesterday. Nobody 'threw' them over.