AJ – interesting note. Indeed, seems like the groups that abruptly changed minhagim (to be fair – mostly towards Jewish minhagim from other groups), are now the most militant in holding to them …Could one use this as a reason to return to previous minhagim? On one hand, the new minhag is a multi-generation neder. On the other hand, someone might say that he is shocked to discover that his great-grand-father was a Litvak and, were his ancestors more aware of this fact and how the matzo balls taste, they would surely have eaten it!
PS The slippery part of this logic is that Chassidim might have tasted matzo balls on the 8th day, but one can argue that they lost the art or that matzo balls taste special on the first day of Pesach