FTX was incorporated in the Bahamas, and he was living there long before this all went down. If anything, many people including myself were surprised that he did not flee the Bahamas (which is quite cozy with the US) to a less extradition-friendly locale the moment the shit hit the fan.
What did his bail terms say? If they said stay in the county, for example, then he fled regardless of where his home was. If you breach bail terms (without good reason, eg preventing a death) you should never get out on bail again.
He was in the Bahamas for a few years before any of this went down. He probably took trips to the US (and Hong Kong and other places) for various reasons, but his main residency was the Bahamas.