I'm not so sure that it is a sign of taking responsibility for actions.
It could be, given that the entire Freddie Mac situation is under the microscope, the dirt (or truth of it all) is unbearable to shoulder. There are only two things, IMHO, that would cause a man in his position to take his life:
1) A profound depression caused by guilt... an unbearable personal consequence should the source of the depression be revealed, or
2) A profound trap that causes an honest person to succumb to "keep silent" pressures. The devastation caused by forced silence chisels away at core values and escape (in itself) both relieves the pressures and clues outside focus ONTO the hidden sludge which caused the trap.
JMHO. Either way, it's 'profound'. Either way, it's 'bad, bad, bad'.
