My bikes still under warranty so I'm reluctant to tamper with the wiring but if this works then once the bike hits it's first birthday the covers will be coming off. I think I am getting the same drag effect.Hi Wizard,
in the control box under your battery, carefully pull out the jumble of wires, there are several cables which exit the back hole, find the fat cable which leads to the hub motor, one set of cables ends in small white plug which then enters the controller, the wires are coloured red,black & usually yellow. disconnect this plug, now try your throttle.
you should now have no pedelec, just throttle, give it a whirl.
good luck,
beeps
.