first of all alignment won't cause a vibration or shake from a car. secondly what year is your accord, 90 - 93 accords were know to have a shake from your steering wheel (while in gear at a stop) if it is accesive or worse in reverse it could very well be a broken motor mount, usually the front. If its not more so in reverse then the rear motor mount has a vacum operated damper and they can go bad, this goes the same for 94 - 97.