The Twins had other starters coming up at the time whom I would have rather traded than Garza. And as much as Gardy and Andy didn't like Garza, Delmon Young was in many ways a worse clubhouse presence and that was well known at the time.
I forget which Twins FO official said it, but I know I heard that Tampa wouldn't do Garza for Young straight up and insisted the Twins include Bartlett to make the deal.
If that's the case, it should have been a big red flag for Bill Smith. The Rays knew what Brendan Harris was, and obviously thought Bartlett was a much better shortstop.