My Iron Cobra has a quick ring that easily disengages the spring, as mentioned above. It makes the pedal a little more compact, as you can lay the beater all the way down onto the footboard. I wrap it in a packing blanket and put it in the hardware case.
I don't see any reason to disengage. I would suggest buying a spare and keeping in the stick bag though. I bought as single pedal Ahead armor bag for my pedal, partly to protect it and also several of my gigs these days are on house kits. The drums are fine but the pedal usually isn't so I have three bags, snare, cymbal and pedal to carry on those gigs.