Dan was pushed out because he was greedy and unethical and a terrible steward of investor capital, as proven by the +40% shareholder value destroyed on his watch.
That's very wise, we should all take notes for future use. In fact that bit of brilliant insight can be applied to just about any biotech (no.....! to any and all companies)! Given the wide applicability of the above gem, I expect to get very rich as I apply it to my investment activities.