There are a number of other bugs that were introduced or re-introduced with 1.4,
That may also be a possibility, I agree with you.
and it makes no sense whatsoever to post "oh, you can still do it" when there's no reason for the change in the first place.
I disagree with this since another possibility was that it wasn't previously working as intended and got fixed : that's a good enough reason.
I suspect that this was intended to be a part of NiM EC mechanics, and Bioware screwed up by making it part of HM mechanics.
I agree that may well be a plausible possibility as well.
The fact remains that you do *not* need to interrupt everything, just kill them before it stacks too much, it's either like 8 or 10, and it's not very hard to kill them before they reach 8-10 by splitting the raid 2-2-4.
As the poster above, we too wiped once because caught off guard, then adapted and found it wasn't such a big deal.