Originally Posted by mrswirl

The checked bag is the problem. Since it is considered an international flight, I doubt highly that they will allow you move over to the later flight unless and until they actually cancel your current flight due to the mechanical issue.

You can try to find a friendly GA and plead your case (ie: missed business meeting, etc.) but it's unlikely they will agree to pull your bag from the delayed flight and rules won't allow you to fly on a different flight than your bags.