Our own advice to agency clients is that if you uncover amisdeed, your first call should be to your legal counsel, and your second, immediately after, should be to PR.
The most problematic form of digital attacks for businesses are evil clones, impersonators who use technology to create a believable avatar of you that confesses to amisdeed, or exaggerates your faults.
What he does dispute is that there were enough people at UBS who knew what he was doing that he should not have to pay a price for his misdeed (aka prison).