That had passed under my radar for some reason but obviously you're right it must be the major cause of concern for Aes Sedai that breaking the seals the wrong way could rip open the Bore completely.

Interestingly, that would be picking up the debate over the sealing pretty much where LTT and Latra left it

I guess that could convince Rand even, to be reminded of that risk. He may end up agreeing he has to break the seals when he enters SG and not before, must be ready to strike at the DO immediately when he does, if not already be in the Pit when Egwene breaks the last seal.