Interesting Akvan!! Good work you found this.
Do you maybe have a link to Pubbakamma Pilotika Therapadana (THA AP392)? Is this a text in apadana? I do not have an English version of it. Never read it.
Still, Nagasena in Milindapanha makes clear that the wounding of the foot by that rock was not due to kamma of the Budddha. So that seems to be inconsistent.
Anyway, at the moment i still belief the Buddha-Dhamma does not teach that any bodily suffering we experience is some kind of repayment of our own evil intentions and deeds in this and former lives.
siebe