I know this is a long shot theory but i have been thinking about it ever since i saw the 7.2 patch trailer and if you look at this picture
it does seem that something or someone open the planet in half and cocooned inside, also what Kj said "i payed this destiny with my world" the fact that he is floating around with a ship and not sitting in argus probably means that he cant or he is staying away from the planet because sargeras is forming inside