your understanding of crewspace is a bit incomplete. (snip) honestly, i don't understand how you could have been working in the live event business for 10 years and yet no one you know personally is a crewspace member or might know a crewspace member. makes me wonder just what kind of events you've been doing.
On that same note,
http://public.crewspace.com/preview/cs-application.php?cs_=www shows a manner by which you can request an invitation from Crewspace directly. Did you try that route? It does appear to require three references; people who know you in the pro community. So, if you didn't put in three references (whether it be because you don't know enough different people, or the ones you do know wouldn't give you a positive referral) then working to expand your current network of contacts would seem to be advisable.
Ray
Ray