Actually no, what you described is just a threat and motivational story plot, but for ntr it actually needs to happen. If you just threaten to murder someone, it's not murder. But I see where you are going.
I never cared much for Eric. He is a good plot device to get things rolling, but nothing more than that. If he was a more interesting character, his plots might have been worth something.
Once I tried the friendship path and it was boring as hell (well, except for all the neutral elements in which he plays no role in, these are identical on all paths). The only good path was the one where he would actually be a threat. But also that got old at some point and I got him kicked out. Since them I don't care to see anything of that char again. Good thing is that in BIBOAS you hardly notice him if you don't want to except for the scenes where you need to take a photo of him (or kick him out).
Btw, I now also played the Max' plot of Glamour and it was ok, just that constant control/submission/domination/punishment was really really annoying. I prefer better plots with a more natural progression. What saved it, was that massive self irony, with chars being fully aware that the whole situation is nuts.