Sudden expansion of team 448X robot

Hello guys I saw the video of team 448X. Great robot and good production! But going back to my main point, their robot suddenly expanded from the initial position and I frankly don’t understand the mechanics. Can anyone explain this?? Thanks

The intake tracks are on a joint and rubber bands pull on and hold the intakes in place. To release them all he has to do it raise the lift enough for it to clear the robot and the rubber bands pull it and hold it

Check out their documentary:

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