Mr. Prokhorov,
What a good news. It made my day today. Sorry that you're not happy at this moment, but I'm sure it will give away to a brighter days in your new career.
You say that you cherish your failures as much as your successes, right?
First step in politics and first stumbling. That's ok, you can handle it.
You gave the party $25 million for advertisement and public relations and they got rid of you. Or, you resigned, as you showed.
I've got both on the news. Couldn't conform which one happened first by the clock.
Make sure you put it out there for people to see. It's important in the matter of you staying in the party as a member, in case the steam cools off and you change your mind.
I hope you don't, but... who am I to tell you?
Best regards.