I am not the person who tried to explain using telekinesis for flight when I can't lift a person in any other circumstance. The problem is that your explanation is, frankly, total crap. It doesn't work. It tries to use science, but goes horribly wrong--using negative mass to push off the Earth but ignoring that this would push the character's body away from the inside (hi, explosion). It's an overcomplicated mess that is infinitely inferior to the simple explanation, e.g. that their telekinesis is stronger on something totally compliant with the weird forces acting on it... like their body.

'This is bullshit' is not a personal attack. : |