I wouldn't consider that dog a cur, though I would consider those moves questionable. That being said, lots of dogs do questionable shit at times. Dogs, at times, look around. Some dogs walk off down dogs, etc. While the moves are questionable, and I personally WOULD question the dog's gameness, I wouldn't call it a cur with any actual belief. I've seen way too many dogs do questionable things throughout their career to just label a dog a cur, with some conviction, just because it does what you describe.

I can't say, for sure, if I'd show the dog again. I've had some instances where I did, and there were others where I didn't.