If I had to guess, he was more afraid of the legal ramifications of being sued.
Still a tragic loss of life, but paints a little more accurate of a picture.
The normal reaction from executives is irritation and propaganda against 'frivolous' lawsuits and plaintiff lawyers.
If someone is in mental distress who knows what would put them over the edge, but I don't think such a lawsuit constitutes any sort of explanation in itself.
More seriously, if he was emotionally deeply invested in BBBY, having to fire 1 in 5 workers and close 150 stores was probably devastating. I also understand he held a large amount of stock in BBBY which has lost a significant amount of value, and was named as a defendant in a class action suit (something about misleading statements about BBBY's finances, I'm not across the details).
Maybe he was facing the prospect of bankruptcy, or otherwise not being in a position to enjoy retirement?