Trading Stevie is not really stupid once you draft Watkins and pick up Williams. You're not getting Williams to be your number 4. And who out of Watkins, Woods, Williams and Johnson would be the 4? Of course, if you're keeping Stevie you have no reason to bring in Williams.
Trading Lynch wasn't stupid either. Jackson was more than capable of handling the running on his own and Lynch was one problem out of being in major trouble with the league offices - of course that hasn't happened yet but sometimes you need to hedge your bets. What was stupid was drafting Spiller instead of a Dez Bryant.
Letting Byrd walk was stupid as there is nothing in place to replace him plus he was let go of for absolutely nothing.
And the real reason why this team doesn't make the playoffs has to do with the poor decisions on QBs which hopefully next time the right one is chosen.