This means that the Playside Tackle can continue to widen his split until two defenders jump into the B-gap.
Playside Tackle oversplit on Inside Release
Coach Johnson says that even when the defense puts one of the two defenders in the B-gap, one of the two defenders in the B-gap must take the B-Back or the defense is going to have real problems.
In addition, Coach Johnson indicates that the Guards have the same 3 foot splits because the mesh point needs to be kept consistent for the Quarterback and B-Back. There can be NO alteration with the Guards and their splits.