The various press accounts seem ambiguous about when/where Dean acquired MRSA. One account says after he entered the hospital and another says he tested positive for Flu B and MRSA upon being admitted. Any of the 3 maladies noted (Flu B, pneumonia, MRSA) can cause death, even in a “healthy” 45-year-old. A likely scenario is that he became infected with Flu B, which developed into pneumonia and he then acquired MRSA in the hospital after being intubated.
The news reports of this death as “sudden” (he was in ICU for 2 weeks) along with bookending it with the Barnett death certainly adds fuel to the conspiracy theories. Then there’s Dean’s attorney stating that he doesn’t want to speculate about the circumstances of Dean’s death. I’ve not seen any reports of additional investigation of Dean’s death beyond the obvious and well-documented medical circumstances. I don’t know what else there would be to investigate.