Get fired. Get the corona dollars. Cash in your 401k. Tighten your belt until your nut grows big enough. If you blow up, get PPP. Try again.
Start your own private wealth management and grow. If you are thinking about getting additional education like a PhD, any prior work would accelerate graduation. You can patent an idea and monetize it. If you are confident you can borrow money and invest. I don't get what you said about 401k. You are able to develop a quant idea but you don't know how to put it to use? It is hard to believe.
If somebody can reverse engineer it, they will do it 100% despite their assurances otherwise, even with legal documents signed. So I would say your option of leveraging it with OPM is out. Only possible scenario I see is you just keep it to yourself and grow it with whatever means you have at your disposal. Get a loan, mortgage your house, work a side gig, or whatever.
Even you do not have to borrow. If you have a few thousand you can start making your nest. How come you still do not have it, it is surprisingly unbelievable.
Is it not possible to setup some kind of hedge fund where you can have clients but keep the trades opaque?
I've looked into that in the past. Cost prohibitive. Plus, investors are scared of putting their money in custody of an unknown private fund.