I'm assuming _why kept the free stuff up, but took down the stuff he had to pay for? I'd probably do that as well. Monthly hosting fee's and domain name uptake can be a PITA, and a money sink.
Gotcha. Well, no harm in deleting your own Twitter account. It may be that he was on a paid plan at Github (personally, I'm on the $7/mo plan), and just deleted it instead of downgrading? You "can" downgrade accounts though, for what it's worth.