"Isn't the dependable 'helical drive' transmission stronger than the orbital? (ALL METAL GEARS) So, wouldn't the spinning force of the helical drive have the power to recover fully with the 1 minute spray rinse?"
The "gears" only function during agitation. During spin, the motor reverses, the lower pulley climbs the helical threads on the lower shaft and locks the pulley, transmission, and inner tub together, causing the entire unit to spin. With this genius design, you can have a locked up transmission and yet still have a perfectly good spin cycle.
"Helical" gets thrown around this site too loosely. The orbital transmissions use the same helical shaft setup as the older transmission, hence why they all use the same pulley, belts, ect. The older transmission should be referred to as the "Newton" transmission or "Pitman (driven)" transmission since there's no pitman arm in the orbital trans. Long stroke/short stroke transmission works too.