Looks like we finally figured out what is going on.
First we started having issues with VBulletin Blog Comments - fixed width is not restricting large images to fixed width, they are expanding outside of the frame. I can supply screenshots and/or links via pm only, upon request.
So we started a support ticket and forum request for support at VBulletin.com
We tried the suggested fix and it worked, however then our pop up large images, were being stretched tall, instead of wide. It seems that the fix for the blog issue also edited something having to do with Photopost pop up large images.
We have removed the fix and now the pop ups are back to normal again, however we are now stuck with the same VB blog issue and cannot get support from them, because they don't support us while your plugin is installed.
So the ping pong match is in your court now, how can we proceed to resolve this?