“They have to bring in a more experienced reservoir engineer otherwise I’m out after this campaign.”
That makes no sense at all. Either you trust that the company has the ability to produce the goods, or you don’t. And if as you claim, the person who you’re attacking and can’t defend themselves here is a liability, you’re then saying that you’re going to remove your investment pending the outcome of a drill.
So which is it? Are you genuinely unwilling to invest in the company because you believe one person in it isn’t qualified to do his job? Or are you gambling on the outcome of the LC drill?
Because the proposed timing of your dis-investment bears no relation to your stated reason for dis-investing. If anything, it shows that your statement about his ability is just idle libel, if you need the outcome of the drill to confirm it for you.