Yea... clamping pitch and normalizing yaw fixes Anti-Aim, I'm surprised anyone has figured out how to do it, me and friendly figured this out ages ago and this exact method is actually in SkidSmasher (not the version that was nerfed and posted on here), but from experience, it doesn't seem to work all that well with netvar proxies, try postdata hooks for better results.
edit:
holy fuck ignore my username, why the fuck did i recover this account