KoasterKing 205 wrote:
Well I can tell you that without so much as a hint of evidence that it is. I can't see anything which suggests that it happened at all, let alone that it had anything to do with the closure of the ride itself. You're claiming it but anyone can do that. That's what I mean, I personally never seen or heard of it happening on the ride. I would've thought pages like Wikipedia (although not solid evidence) at the very least would've had something like that mentioned.
Shortly before the ride closed, it was temporarily closed for a “design update”, which was confirmed by Alton Towers themselves via their Facebook page. When it reopened, it had new thigh restraints and a lower locking lap bar, and because of the new thigh restraints large numbers of guests could no longer ride it.
It’s well documented across various other enthusiast forums that N:ST had restraint issues in the weeks leading up to its closure.
Just a quick Google search for Nemesis Sub Terra restraint
brings up three topics on enthusiast sites which discussed the issue around the time the ride closed, including this very topic, where discussion around the restraints began on page 5.