I don't think there is a gizmo to fix this besides: proper use of cedar, izotope or an eq/hipass filter combined with good old pencil in Pro tools.
The point is that the energy from the plosive makes the capsule 'tremble', creating a distortion in lower mid band of the p. So it's not easy to fix..
The only real gizmo to fix this is.... precaution/a good voice artist/good mic placement.
So i guess you're stuck with manual editing for this book. And remember you're looking for reduction not erasing the p, it is supposed to have some energy.. just not too much.
Also, think about who this is for, a technical listener ar a general audience in an airplane seat at 2000 km. :)