Hmm yes it does. Alcohol is a depressant, meaning it gets in the way of your nerves firing so you gonna be less coordinated than you normally would. A big rush of adrenaline is going to act as a stimulant, it helps carry messages from one nerve to another, so in that sense yes, it will mitigate some of the effects of alcohol. It's your fight or flight response kicking in to get you out of a dangerous situation. So yes, in some ways it will boost your motor skills temporarily. It will also boost your heart rate and blood pressure, so you will have more blood passing through your liver and kidneys per minute so it may very mildly help you to filter more alcohol from your system.

But that being said, all that alcohol you drank is still in your system. It has not actually sobred you at all. In five minutes when the adrenaline wears off your gonna be back to your stumbly poor decision making self.