As much as people dismiss the idea that somehow the Indonesians could buy these, maintain them and have a viable air force I would caution people that money talks.
Just because they did something stupid in the past doesn't mean they will do so in the future.
Acquiring the technology is easy but given the state of military salaries around the world it wouldn't be that hard to persuade young "retired" experienced personnel to move to a sunny place with mega nice salaries and perks.
Its not as if members of NATO forces have not taken on assignments as "trainers" with Govt sanction with various militaries around the world often as an assistance to an arms deal.