Try to build a portal as close as you can get to your corpse without aggroing Moder. Then eat the best buff food you have and jump through the portal completely naked. Sprint to your corpse, pick it up and try to make it to the portal.

Hopefully you can get your stuff back. I wish you the best of lucks.

Corpse runs are best done naked, as you then can just grab your stuff with one keypress, and you don't have to bother with an opening inventory, which takes precious time to sort through and close.