Here again, is an instance of dominant sibling intimidation. From the distance you can see the dominant sibling approaching. When he reaches his sibling he pushes him to move — assertively and possibly threateningly. The accosted guy faces him, eye to eye, for just a minute, but then bows low before running off with his ears back. The dominant sibling pursues. It is only for a short distance — only long enough for the dominating fellow to feel that he has the upper hand and that he made the other one move off.
Apparently every coyote in a pack chooses its role and position in the pack, including the subservient fellow. Dogs do the same thing. Hierarchy is thus established without a fight and without injury which could actually hurt their survival.