True. But he suffered for a long time from the injury whatever caused it. It just doesn't seem plausible that he self-inflicted it or that it was a mere burn. And the motivation to do so just isn't there. And then there was that smell that the son reported when his dad got home--a pungent mix of sulfur and burnt motor.
"Michalak continued to suffer from prolonged bouts of diarrhea, headaches, blackouts, and continued weight loss, eventually seeking help from the
Mayo Clinic.
[1] The Mayo Clinic's report determined that Michalak was of sound mind.
[12] His physical condition following the event was allegedly consistent with
radiation poisoning,
[9] but tests administered at
Pinawa, Manitoba, following the incident came up negative.
[3][15] Michalak allegedly lost 13 pounds (10 kg) following the incident,
[2] with his
lymphocyte count drastically falling to near lethal levels.
[15] He continued to suffer from intermittent reappearances of his burns,
[14] and its effects would never fully subside by the time Michalak died in 1999."---
https://en.wikipedia.org/wiki/Falcon_Lake_Incident