That's one of the things I brought up yesterday with Ron as well. I'm no idea who all these random people are and what they are suppose to be doing. My dev email is being flooded with all kinds of emails from people I never heard about before a week ago.
What is Zbx's role precisely?
As I understand it at least (and I may not be 100% correct), zbx was a candidate for Tech Lead. He had talked to Ron and Ron was down with him working through the dev hires.
I think now there's some organization taking form, which is why you are seeing more people. But I think there needs to be a clear organizational structure laid out to everyone, otherwise it just ends up looking like (and working like) a Chinese firedrill. The board's hiring strategy is still not clear to me, but to their credit, I sent them over an organizational diagram and we have been working through what the final structure will look like. Hopefully we can get something finalized shortly that will lend some clarity to everyone.
The problem is, essentially, to grow, roles need to be delegated. If I bring on someone to do thing X, then I still take care of thing X and don't tell them anything about the decisions I'm making, that can be a problem.

I'd like to think that Ron had this conversation with you before he had the conversation with zbx (things have been moving quickly lately I guess).
Zbx mentioned he had a call with Ron and that's why he contacted me. I'm still confused now as to what his role exactly is going to be but perhaps he or Ron will shed some light on it

Guys,
I can say with some confidence that Ron is not watching bitcointalk threads, so if he needs to clear up questions about who is doing what, you'll need to email him directly, preferably use info (at) mastercoin (dot) org, since several people will see your questions who might want to weigh in.
He is taking the initiative in hiring devs, and he's having lots of conversations with lots of people. Things are bound to be chaotic while we get this all figured out.
Thanks!
For my part, I've made some direct inquiries, and I put up a job offer on Coinality today. As of right now, there has been very little progress made in the search for full-time developers, and Ron's whole approach to the hiring process is completely wrong. For one thing, the project should not be trying to hire two teams of three developers each all at once, to work on 'whatever they want' (as Ron would have it). I'll continue to search for developers outside of the Mastercoin community, and recommend some of them to the board to be hired.
Ron did not say to me that Tachikoma and z0mbie were [effectively] already hired, but I do expect that he (and a number of others) would be happy to engage them full-time.