What exactly do you mean?
You can send any amount of Bitcoin to another Bitcoin address, regardless of the value in USD.
If the lender accepted Bitcoin or that guy convinced him to, then after that it was pretty easy. He just sent them.
They don't give home equity loans in bitcoin, so the question is where did he buy the bitcoin with fiat in such a large amount. And probably no one but him and the counterparty know that. My guess is either an exchange that he was already verified at--and had an enormous buying limit--or a private transaction.
But who knows and who cares. This guy is insane for doing this IMO, and hopefully hehas some sort of exit strategy in mind. I didn't read anything about that guy, just what I read here on bitcointalk. These kinds of stories make my stomach spin and head churn.