Toreless - draft-5 section 4.2: does section 4.2 need to explain redirection?

[mcr]

511	   assumed services are accessed at that domain too.  As trust is
512	   already established via the Voucher, the pledge does a full TLS
513	   handshake against the local RA indicated by the voucher response.

515	   The returned voucher contains an attribute, "est-domain", defined in
516	   Section 5 below.  The pledge is directed to continue enrollment using
517	   the EST registrar found at that URI.  The pledge uses the pinned-
518	   domain-cert from the voucher to authenticate the EST registrar.

I am not sure these two paragraphs are needed given how the explanation after
the picture should cover it all in chronological order. But if you want to
keep this text, please reorder from benjaming button order to chronological.