I'be soloed the PPLant as NOD. You gotta have good FPS, good timing and one hell of a timed jump. Someone else posted the timing before for Under way back when... I think its like this but usually I get lucky.
1. Run/Strafe to Rock.. you should have about 25 armor left as tech.
2. slowly back to ramp crouching, when you hear the missile hit back to rock
3. Before missle can reload...Keep close to PPLant and RUN/JUMP to avoid missile splash damage when you round last corner...
something like that anyway, every once in a while i remember.. usually get a little to nerved to pull it off, but it can be done