I know the longer exposure is meant to enhance the sense of motion for a wedding dance... The motion in this picture is such that nothing is really in a nice crisp focus, but things aren't 'blurry' enough so that I know it was a LE shot.
As a result I think it makes it look more like... an accidental long exposure than an intentionally planned one...
Basically I think the exposure should have been longer so I wouldn't think this.
I'm far from an expert in this. But it's what I got from the photo.
nicely done, incorporating wedding photography in a long exposure. This has a romantic feel to it. I personally would've removed the red cast, but that's just a matter of taste, not any real reason to.