I don't think you can do that. You can not cash out the $100k you just got as investment, it goes into company's account and remains under company's control. With 50% you not only give up equity, but even control. I believe this accelerator may also ask for multiple board seats. The investor here will have the biggest stake and control of the company.
You dont even need a "no extradition treaty" country, just be russian and move back to russia, of course that has the negative points of, you know, having to live in russia.
I think what parent means is mini vacation while you figure out your next move, but I am sure tongue in cheek. Seems like a waste of money and time all around.