Hmm, I just ran the VCR specs against Typhoeus 0.5.0.pre and you're right -- there are fairly substantial interface changes in Typhoeus that break's VCR's integration with it. FWIW, I had a brief twitter conversation with the maintainer of Typhoeus where he hinted he might change the stubbing interface:
He hasn't followed up with me at all so this email from you is the first time I've noticed that the integration is broken.
So...for now, VCR doesn't work with Typhoeus since the public APIs it depended upon have changed. Nothing I can do about that. I hope to get it working again. The Typhoeus maintainer hinted that he might be willing to update VCR as needed to whatever the new stubbing interface is.
If you care about this, I'd encourage you to open a ticket on the typhoeus issue tracker mentioning that VCR integration is broken and that it affects you.
Myron