The only thing is Turnbull can't just decide to convert his debt to shares. He can sue for his company back and potentially put USOG in bankruptcy, but he wont be able to take over the whole company unless there is a new agreement. He can only sue for the amount of money owed he can't take everything. There is a stipulation that he can own only a certain portion of the O/S. I think it is 10% but I am not sure.
At this point it would not surprise me to see USOG go bye bye, but neither would it surprise me to see Turnbull agree to take a higher position with more control, maybe he could shake up management if the majority stockholders like his terms. Something got to happen, I am tired of waiting.