Not too long ago, I created a listing for these as "1997-98 Pinnacle Uncut", which currently can be found in the "Oddball" subset of 1997-98 hockey card releases.
https://www.tcdb.com/ViewSet.cfm/sid/283287/1997-98-Pinnacle-Uncut
I only added pictures of a few that I had in the "Packaging" section, as examples of the front & back of the pack and the cards themselves. I don't know if this set would be allowed an exception to the no-photo rule, due to their size - but as you pointed out, there is no way to scan these on a typical flatbed scanner. I do know that if pictures are allowed for the individual cards on the checklist, they would have to be taken out of the wrapper first. I see that a Roy collector has posted a photo in the "Pinnacle Jumbo" insert set of 1997-98 Pinnacle Hockey, but it's still sealed in the wrapper.
That "Jumbo" (Beckett nomenclature?) listing should probably be removed (or renamed), as these sheet-sized "Uncut" cards clearly were not inserted into packs or even as box toppers of '97-98 Pinnacle. Maybe this could be moved into that base hockey product listing as a stand-alone insert set (up top) with the necessary Notes & Comments.