That's never really definitely qualified in the text, and Rand's Argument with him implies otherwise, as does logic (why else bother with the distraction of TG itself). Everyone in universe, none of whom know what might happen as it clearly CAN never have happened before, is just guessing based on no information at all and pure supposition (a bit like us really) except Moridin who is mad, wants to be told that's why the DO will do and the DO is seen to manipulate his underlings by lying to them. Unless RJ has spoken on the matter, which he may have as that would be his kind of thing, in which case I am wrong and I apologise.

As for the wording, it's just that "pulled into the pattern" strongly suggests to me that he wasn't in it until Rand actively pulled him in. I accept that the sentence beforehand confuses this by stating something else which is highly unhelpful of Sanderson. However, my pedantry is pointless here as you are quite right in that whatever her reasons or logic, Egwene was correct to insist the Seals were not broken too soon