Is there any way to forbid moderators to stick\unstick threads?
Yes remove their permission.
Unfortunately MyBB placed it with the ability to Open/Close threads as well. Dumb move imho.
Quote:Can open/close and stick/unstick threads?
These should have been separate but they are not. You could probably code out a quick plugin to deal with it though.
or just remove the links on the templates
I can't code a plugin... I think mybb devs must separate this feature "Can open/close and stick/unstick threads?" in next versions.