I have a similar question. I need to display the larger images within the photopost page, so it forces a page refresh as the previous version did, not a popup.
Is there an option or a workaround to keep the older behavior working for viewing the larger images? As you can imagine, this is a matter of generating maximum pageviews, so the old way of displaying the larger images was a key benefit of the entire photopost system.
I would certainly suggest an option to display the larger images in one of the 2 ways moving forwards so the forum operators can choose what is best for their business needs.