Ajahn Thanissaros teacher Ajahn thate had also writen a biography which paints him in a completely different light I believe (?) although it is only available in thai.
just to note Ajahn Thate also wrote his own biography so that when he died others wouldn't imply special powers to him, see his own bio.
P.S., Ajahn Maha-boowa was a 'johnny come late' to Ajahn Mun and didn't spend much time with him compared to other disciples. although I have full confidence in each of these teachers, how one disciple remembers the teacher isn't important, what is is whether the memory is useful & conductive to our own practice?
He who knows only his own side of the case knows little of that. His reasons may be good, and no one may have been able to refute them.
But if he is equally unable to refute the reasons on the opposite side, if he does not so much as know what they are, he has no ground for preferring either opinion …
He must be able to hear them from persons who actually believe them … he must know them in their most plausible and persuasive form.