something is really fishy about this story.
I'm not convinced you own this bitgo account.
Coins in this wallet originally came from a tumbler so there might definitely be more to this story, I'll look into the origin of the coins a bit more.
right, what are the odds that someone tried to double spend to HIM while HE wants to move essentially 100% of his bitcoins to another wallet?
Definitely something is up, I think he has either gotten into a hacked email and knows a little bit and wants to make some cash or he is targeting this wallet for some reason.