Control Issues

So our main investor - who I will call Mr. Potential - appears to be heading towards a huge confrontation with the rest of the team and I am not sure what is going to happen next.

Mr. Potential was originally going to give us all of the first round funding within a month and $50K immediately to bridge us over. We had agreed that we could have the full invention built and ready for sale by December of this year.

It took 2 months to get the $50K and we have yet to see any other money. Rather than keep things close to the vest as originally planned, Mr. Potential has forced us to show our inner workings to a series of external "experts". We are also now finishing up another proof-of-concept (we had one prior to Mr. Potential) instead of working on the main invention - all to get Mr. Potential on board.

The proof-of-concept was originally going to be sufficient by itself, then Mr. Potential wanted us to show our code to one expert to obtain "independent verification". Now Mr. Potential wants us to show the invention to at least 5 "experts" and several other investors...

Of course none of this makes sense as we are trying to sell what we have and neither the "experts" nor the investors help in that regard. Is this all just to get Mr. Potential back on board? When is it too much?!?

The original mistake was not shopping this opportunity around and by jumping on the first viable option, we really put ourselves in a corner. Further, we have never pushed back on Mr. Potential because of all of his...err...potential. Outside of the bridge loan, he has never delivered on anything he has promised and is constantly throwing up more obstacles to overcome.

So we are on the verge - on the verge of pushing back, cutting him out of any future deals, finding other sources, etc... In the end, how much is it worth to have control over the strategy and when do you honestly push back?!? There are no books or guidelines and any expertise really...

Thus we are grasping in the dark and hopefully we can find the best path out...even if we have to leave Mr. Potential behind...