What you call necrodisease, the rest of the world calls common sense.

At this point, the issue the original thread was created for was already solved, and more than half the thread was people being trolls. anyone that cared in that thread had long since moved on to other things. Why would notifying them be of any use? You're not even facing the same issue! Start a fresh thread, outline all the details involved (including that you're playing with a co-op mod!) in your own thread, and discuss it without any irrelevant baggage.

The answer to your question is that in vanilla DX, you press Right Mouse Button, and if the body has items on it, you'll loot those first, and then pressing RMB again would pick up the body. If there's no free space in your inventory, you'll just be stuck trying to loot the body. In mods like DX: Revision, they made tweaks so the items would be dropped on the ground if you've no inventory space, but you're playing with an unnamed co-op mod, so all bets are off. Seeing as all the missions were made with only one player in mind, Player 2 might be stuck trying to loot it over and over, because the flag that says the body was searched is only getting set for Player 1.