Perhaps I'm misremembering, or just ignorant, but I feel like it is a huge detriment to an applicant when you have to check the box stating you've previously matriculated to medical school somewhere? And as @Goro likes to point out, it shows poor judgment to have gone there in the first place (instead of trying to improve and going the US route).
Have you already applied in the US? You'll be both a reapplicant AND someone who has already been accepted to AND attended medical school, which I'm pretty sure will have your application ignored, no matter what SMP/post-bacc work you do. Not trying to be a Debbie Downer, but this is the reality.