Mark is his original name Jas Sand. He used to pose anti-Hindu anti-Brahmin messages on forum and I used to fight with him to stop doing that. He then changed his name to Simply Human and the rest u know...
Now I think he is trying to run away...I dont know whatup with that.
Lord Krishna says "For temporary there is nothing permenant and for permenant there is nothing temporary" in second chapter. So based on that, he had left I think.