Yeah, the Spearwall skill itself wasn’t nerfed, the AI was just tweaked slightly in handling it by adjusting the value of a single constant that determines to what lengths it will go to avoid running into spearwalls. Wiedergangers still charge mindlessly into spearwalls, but they’re supposed to, as having no regard for their own safety or any tactical considerations is part of their identity as mindless undead.
Generally speaking we’ll always try to enable the AI to handle certain player tactics more intelligently before taking out the nerf bat. I have a bunch of AI improvements on my todo, it’s just that fixing technical issues is a priority still.