[Phyrxes]

In the past we have used "remove before flight pins" to hold any mechanism that involved stored energy in place. This allowed the drive team to safely place the robot on the field. You just have to train them to pull the pins (and the brightly colored streamers attached to them) after setting up the robot on the field.

Edit: We also have used tethers to constrain an element to the robot incase it failed, much like auto racing does with suspension components. Even if it fails catastrophically the part is unlikely to fly across the field.