I doubt he ever did not believe the earth is a sphere. It was just a game trolling people; he got a lot of recognition for it - I wonder why he stopped. :/
His shrink probably threatened to cut off his meds if he didn’t cut the shit and get out more.
Earth.
He might have been working from his laptop out in the courtyard of his funny farm.
Regarding the words under your avatar: everybody is born once as you mean it. Not only atheists.
But believers in Jesus salvation are born twice... the first time like the atheists, the second time of water and the Word, effected by the Holy Spirit.
Here's the important part, though. Atheists will die twice, but Jesus believers will only die once. What do I mean? At the resurrection from the first death, believers will go on to eternal life. Atheists will go on to the second death where there is no further resurrection.
This second death will be agonizingly painful, and will last for eternity. Why eternity? Because we are, spiritually, a tiny chunk of the Spirit of God likeness. Such a spirit cannot die, but will be in a position of being constantly destroyed forever. God will not be there to maintain it as He will be for those who do not take part of the second death.
Even if you scoff at this, and don't believe it, consider it, because it won't be fun if you miss out on eternal life.