Without making a big deal out of it there's 2 reasons to give veterans 1 year deals when you're bad.
1. Your youngsters aren't ready.
2. Trade them.
Don't know who will end up traded or unceremoniously dumped but Colson 's setback was major. The highs and lows have to be less dramatic. You're looking for consistency and a major part of consistency is time. He could have an 0 for 15 slump in a week you'd like to see him bounce back from strongly. He needs the confidence that comes from longer stretches of excellence than a month.
A lot of the vets Getz hoped to trade have been injured. Now they're not. A few extra arms at the TDL won't hurt the organization devastated by all the pitching injuries. And Colson showing some consistency of excellence won't hurt either.