THere is no evidence that the request was recent, or acted on quickly. Dog was arrested back in 2003, so for all I know the mexican government made this request months ago.
According to the news reports, Luster was using an alias and a fake ID in mexico. So it could well be nobody down there actually KNEW who he was. I also don't doubt they didn't CARE who he was -- but that's a far cry from suggesting that Mexico refused to return him to the country, when the fact is that the government never refused to return him, and in fact returned him within a day of arresting him.