I do think the screener has way to much blue in it. Like you pointed out with the Bat Bunker, there is a blue cast over the whole presentation.
But it still shows that it was a different grade to what we have released on any home video version. The bank vault is what sways me more than anything,, as (I think) it's not a change you can fix with a color adjustment applied the whole film, and certainly not in the color space available to work in.
I don't think outside of a 35mm scan were going to get any better a reference for the project.