@bgrade:
This is brand new technology. We're early adopters. Hiccups are expected.
As of today, I just passed the 4k mile mark. I have experienced the 'abrupt braking' you are mentioning a couple of times. Basically, what I've discovered is: sometimes, when the vehicle almost comes to a full stop (as in letting go of the brake just before being fully stopped), the abrupt braking happens and the vehicle will lunge forward a bit. Why I think this happens is because when you're braking, the inverter motor stops and regenerative braking takes over. Keep in mind that creep is activated when the vehicle gets to ~2-3mph, and in certain circumstances (I haven't been able to find a pattern, yet) when letting force off of the brake pedal right after creep is activated- the lunging affects happens. It is extremely rare and very hard to duplicate (I keep trying).
Perhaps a later software update will fix this. Software is vital for EV's- the entire vehicle is ran by computers.
In addition, the pop you experience when shifting out of Park is largely due to how the vehicle was put into Park. The best method in parking this EV (imo) is to: come to a full stop, push on the brake pedal further down until 'Hold' appears in the instrument cluster. At that time, take the key out of the ignition. The vehicle will apply the parking brake while shifting the vehicle into park, simultaneously. When shifting the vehicle back into Drive/Reverse, the parking brake is still applied (and therefore no abrupt shifting) and once you accelerate, either forwards or backwards, the parking brake will auto-disengage.