Destruction of Tremas' body

According to one account, the Tremas Master's Trakenite body was lost after attempting to seize the Warp Core, which reduced him to his decayed state.

History
At some point, the Tremas Master discovered the existence of the super weapon the Warp Core, how it was bound to the painting The Scream, and plotted to capture it. The Master elected to steal it from the art gallery it was situated at, but he completely misjudged it's rage when he inadvertently awakened it while in the progress of the theft. It proceeded to strip the body of Tremas from him, destroying it, which left the Master reduced to his decayed form, before it went back to sleep. (AUDIO: Dust Breeding)

Legacy
The now Decayed Master was inspired by the taste of the Warp Core's power, and proceeded to lay out a more elaborate scheme to capture it and seize it's power on it's origin planet Duchamp 331. When he retold the fate of his previous body to the Seventh Doctor, the Doctor pitied him. (AUDIO: Dust Breeding)