These NPCs use the spell Entangle which applies to non-hostiles as well as hostiles. I wouldn't think Ordinants would be this careless in endangering stander-bys with their area of effect spells. If this isn't something you want to change then can we consider it a hostile action and attack them without a DM present?
Not much you can do about this. There is only so much the AI can do. Removing the entangle spell from their spellbooks might work, however, doubt its worth the effort.