Lync Vanity Simple URLs issue

Documentation for Lync Server 2010 states that simple URLs can be configured one of three ways:

Option #1 (Default):
https://meet.contoso.com
https://dialin.contoso.com
https://admin.contoso.com

Option #2:
https://lync.contoso.com/Meet
https://lync.contoso.com/Dialin
https://lync.contoso.com/Admin

Option #3:
https://lync.contoso.com/contosoSIPdomain/Meet 
https://lync.contoso.com/contosoSIPdomain/Dialin
https://lync.contoso.com/contosoSIPdomain/Admin 

My company decided to use the second choice, although formatted in a different way. https://ucmeet.contoso.com/Meet worked perfectly. However, the other two produced this error:

NOTE: If not patched to CU5, the error will say "The Meeting URL is invalid..."

Front-End server event logs showed this error:

I reran the deployment wizard step 2 on the servers that are servicing the simple URL's (front-ends and directors) and performed an IISreset.

Still the errors persisted.

https://129.x.x.x/Dialin along with the httpd://fepool.contoso.com/dialin all worked. Everything except the chosen vanity one https://ucmeet.contoso.com/Dialin or https://ucmeet.contoso.com/Admin

A support case was opened and 4.5 hours later (along with two support engineers - one being an IIS specialist) it was determined that this is a bug because the Lync setup configures the IIS rewrites which were not behaving as expected. The case is still open and has been sent to the Lync development team. I'll keep you posted on this!!!

UPDATE: The Microsoft development team has determined that there is an issue (not yet defined as a bug) when using meet in the vanity URL in which the rewrite rules do not know how to handle the request. If any word besides meet is used, then the vanity URL works perfectly. For example: 

https://join.contoso.com/Dialin or https://join.contoso.com/Admin works fine but
https://ucmeet.contoso.com/Dialin or https://ucmeet.contoso.com/Admin throws an error