Dot dot dot what?

So yesterday I suddenly remembered the new YGO movie opened in Japan over the weekend, so I hurried to see if a detailed summary was up anywhere. I couldn't find a complete one at the time, but this one told a lot of it up to a point: http://yugioh.wikia.com/wiki/Yu-Gi-Oh!_The_Dark_Side_of_Dimensions

It definitely is manga-based, and after I learned that months ago I was never sure I wanted to consider it canon. Now that I know more about it, I realllly don't think I want to consider it canon. I want to like it, but some of it sounds so weird and OOC. ( Spoilers! )