Having only just had time to see and grasp this JM business, I see the conclusion as unsatisfactory for investors.
CBM says it is giving him its full support because he's made and can continue to make a valuable contribution to the company. But it's not giving him full support, the board has cancelled his options. So the outcome for investors is an FD who is less incentivised to deliver (if directors' general rhetoric on how essential options are, is valid).
Meanwhile, as is pointed out here, 'secret' insider trading and opportunistic option grants (i.e. market abuse) will continue generally.
Not to condone what he's done, but as a potential investor in Cambrian it bothers me more that the FD could be incompetent to let this happen (what of controls generally if personal finances are not strictly in order?) also that his options have been cancelled.