I don't understand. The other "original spirits" condemned Lorkhan for trick them in the creation of Mundus. So, Magnus fled for he helped Lorkhan in the creation of Mundus (having the other "Original Spirits" pursued him). But what about Lorkhan? What happened with him?

(Sorry for my bad english)

He was killed.

See the two moons in the sky? The big one is his body, the little one is his head. His heart was thrown into Nirn/Mundus, creating Red Mountain. His spilled blood became Ebony deposits.

He ended up on the wrong side of Trinimac's and Auri-el's weapons, spat some blood out, said "Hahaha, you're too late", had his heart ripped out, and then shot into what is now Red Mountain.

He may be dead, but echoes of his being come around every now and then and cause no small amount of upheaval in the Mundus.