while i don't launch balloons - if that is the way you wanted to do it.. would it not make it easier and safer to secure it to a flatbed truck and drive it under the balloon then release then having a crane hold it??
The "crane" is needed to hold the payload still until the balloon ascends to pull the flight train and the gondola payload vertical. The tension in the flight train at balloon release pulls the payload horizontally, fairly hard. The flight train is typically 1000 feet long! While you could secure the payload to a truck, gondolas aren't generally designed to handle transverse loads at the load point. You really don't want them to, either; there's often (comparatively delicate) momentum transfer units at the load point that allow accurate pointing of telescopes once at float altitude (~125,000 feet, or ~35 km). And once you build a structure to take the pressure off the gondola load point, you're generally back to a crane design again.
You can see pictures and movies of our experiment's launch last year from Fort Sumner, NM. The StratoCat site has some additional details about this flight and many others, including ours.
Catastrophic launches like this are really rare -- the CSBF team really do a fantastic job. It's really had to tell exactly what happened here, though fairly high winds were a complicating factor. It's very lucky for everyone involved that no one got hurt.
Condolences to the science team, and best wishes that they can pick up the pieces and fly again...