OK, I'm listening to the wife / chickening out on the plan.
I started to remove the cover this morning, and found out there's a second cover, so I can''t see the actual foam. It feels like the picture on Sleepopolis, multiple layers. It is also heavy AF, and I'm a little worried if I got the cover off I wouldn't get it back on again. So if you were hoping to see a guy cut a mattress in half, here you go -
https://www.youtube.com/watch?v=xAcYkOErOok
this is the video I originally watched.
https://www.youtube.com/watch?v=O2RjRm-LVdo