From what I can tell, last stand kicks in on wimpy, or when a skill actively prevents you from what would have otherwise been a successful flee (cutoff, parting block, entwine, pounce?).

In the case of the majority of the above skills, these also lag you when you attempt to flee. However, since entwine doesn't, it's very possible to get a massive number of hits in on anyone who entwines an orc.

Of course, I'll be perfectly happy if you say it's a risk of entwining people, but it did seem a bit overboard.

It's intentional that entwining an orc with last stand is a calculated risk and may not be the smartest thing you can do.

Although I of course reserve the right to adjust how dangerous it is if I see a need, it really is meant to be something that might just get you killed.

I understand the calculated risk part, but watching an orc spam-flee/last-stand hit down 500hp before more than a round of combat has gone by seems...ridiculous.

I'm currently pretty much okay with that.