So I just died while disarming a pyramid, and found that apparently Creepers are Diamond Supporters. While I did disable the pressure plate, a creeper decided to watch what I was doing and jump down to give me a hug while at the same time triggering the 9 blocks of tnt beneath it.. ..I lost all of my loot..
Im sorry that happend to you today i went afk in the wilderness on emc in a place i thought was "safe" and then when i was afk i was shot off the cliff by a skeleton and died and i couldn't return to my outpost before all of my loot disappeared which included a full set of diamond armor, an enchanted diamond sword (sharpness 4 looting 3) and bunch of other stuff i couldn't remember.