Duilio Davino and FC Dallas parted ways as the club bought out Davino's contract.
I'm not sure if this qualifies as a bust, though. A bust would be when a lot is expected of a player, lots of money and/or resources are used to obtain him and the player does not live up to expectations. That would be someone like Marcelo Gallardo.
Anyone who had paid any attention to the last several Mexican league seasons could have told the FC Dallas front office that Davino was not worth a bag of soccer balls, let alone $400,000. He played with the speed of said bag of soccer balls and was a terror on the FC Dallas backline, a terror for all the wrong reasons.
Now Davino is free to explore his options in Mexico. Not sure how vast those options are but he could probably still land a job somewhere. Maybe.