Ye, I read about that dump. Must've been very painful to watch.
Yes it was. I bought quite a few coins over 200 satoshi myself, so it still stings.
There have been many coins that went through a similar major dump (whether it was a trader or dev) and price never bouncing back, ultimately collapsing for good. The good thing was, NHZ managed to bounce back (not in, its previous levels of course), but at least managed to get through the stress. I believe that showed to many people out there, that this project is not that easy to bring down.

Tbh, from what Ive read many people considered HZ dead and buried when the dump happened. Im glad its still around and making progress.