Cannot now redirect to new site

Selected answers from the Dumb SEO Questions Facebook & G+ community.

• 
  John Pitcher: We have just made live a redesign of a site that had been built in WIX. Their pages were "hashbangs" - mydomain.com/#!/xyz - not real pages, but virtual Javascript created "bookmarks".
  
  When we came to redirect, we found that we cannot now redirect the old #!/ to any new page as these are seen as virtual pages or "bookmarks" and redirects will not work to any new page.
  
  In addition, there are about 50 odd WIX "page fragments" of near-duplicate content in Google's index all now pointing at the home page of the new site but with the #!/ string.
  
  Is there anything that can be done:
  
  1 To delete the old page fragments from Google's/Bing's indexes so the site is not hit with duplicate content issues? (Webmaster Tools will not let us delete page fragments.)
  
  If nothing is done, will Google gradually de-index these page fragments? Or is there any other way of informing Google to delete them?
  
  I have put rel="canonical" on the home page.
  
  2 To redirect any old pages so that any link juice is maintained. (There is not much as the owner had not done any real link building, but it would help for the keywords not to be treated as new keywords.)
• 
  Dave Elliott: One of my friends managed to do this.. I can't find his post though. :( If memory serves we used a redirect rule that used escaped-fragment = (this wont be the correct syntax) rather than the hashbang, and for some reason that worked.
• 
  Edwin Jonk: What +Dave Elliott ;said. For the redirects you should be able to use the ?__escaped_fragment__