To best understand how one would "sled-dog" an adversary or challenge, picture yourself observing a pack of sled-dogs pulling a sled. You notice that the lead dog, content in his position, is not truly pulling his weight. Infuriated, you run in step behind the lead dog, and you slit his throat. It is not enough to simply slit this alpha dog's throat. It is imperative that a show of it is made to the other dogs in order to demonstrate to them your aggression and desire to lead.
Once the slaying is finished, you pick up the body of the now dead alpha dog, and you cast the corpse aside. You then take the reigns and push with all your might. Your new pack will now follow you, pulling your sled through the frozen wastes of Hell's 9th Circle if you wish it so.
I hate that guy. I'm going to "sled-dog" his ass.
Our boss is not pulling his weight around here and needs to be removed. I'm going to "sled-dog" that fellow and make things right around here.