If you press R2 to move through your inventory manually, and then remove your backpack that way and press R2 again, the crafting tab will go away and your stat numbers will remain on screen. While the stat thing is kind of handy, its a bit weird. Everything goes back to normal if you open the crafting tab or open your inventory again.
Equip a backpack
press R2, and move to the armor slot
remove the backpack
Press R2 again to leave your inventory view
(Sorry if thats a bad explanation i wasn't sure how to word it)