Uninstalling Lync 2010 SQL backend. Archiving, Monitoring, CMS results in an error "connection failed to database instance attempting to remove database created by script rgsconfigdbsetup.wsf"

I'm trying to uninstall SQL Backend, Archiving, Monitoring and CMS store from LYnc 2010, i'm receiving the error below. I think I know the reason why but i'm not sure how to fix it! 

connection failed to database instance attempting to remove database created by script rgsconfigdbsetup.wsf

The person who did the installation of Lync 2010 have used the same SQL database Instance ID for all the database Roles e.g. (Archiving, Monitoring and CMS) all have the same default instance ID which is MSSQLSERVER. in my case when I use the function -verbose I get the following.

Running script: C:\Windows\system32\cscript.exe //Nologo "C:\Program Files\Common Files\Microsoft Lync Server 2010\DbSetup\xdssetup.wsf" /dbexists /sqlserver:srv01.domain.com\MSSQLSERVER /publisheracct:SASKI\RTCUniversalServerAdmins /replicatoracct:SASKI\RTCUniversalConfigReplicator /consumeracct:SASKI\RTCUniversalReadOnlyAdmins /role:master /verbose
---------------
Installed SQL Server 2005 Backward Compatibility version is 8.05.2312
Connecting to SQL Server on srv01.domain.com\MSSQLSERVER
Error connecting (
  name:        Error
  description: 
  number:      -2147221504
  message:     
)
Attempting to start SQL Server and connect...
Error starting SQL Server on srv01.domain.com\MSSQLSERVER
Error (
  name:        Error
  description: 
  number:      -2147023840
  message:     
)
Ensure that srv01.domain.com\MSSQLSERVER is a valid SQL instance.
---------------
Exit code: ERROR_START_SQLSERVICE (-1)
When running /dbexists, non-zero exit codes are not necessarily errors
---------------

Running script: C:\Windows\system32\cscript.exe //Nologo "C:\Program Files\Common Files\Microsoft Lync Server 2010\DbSetup\lisdbsetup.wsf" /dbexists /sqlserver:srv01.domain.com\MSSQLSERVER /adminacct:SASKI\RTCUniversalServerAdmins /verbose
---------------
Installed SQL Server 2005 Backward Compatibility version is 8.05.2312
Connecting to SQL Server on srv01.domain.com\MSSQLSERVER
Error connecting (
  name:        Error
  description: 
  number:      -2147221504
  message:     
)
Attempting to start SQL Server and connect...
Error starting SQL Server on srv01.domain.com\MSSQLSERVER
Error (
  name:        Error
  description: 
  number:      -2147023840
  message:     
)
Ensure that srv01.domain.com\MSSQLSERVER is a valid SQL instance.
---------------
Exit code: ERROR_START_SQLSERVICE (-1)
When running /dbexists, non-zero exit codes are not necessarily errors
---------------

Any help is much appreciated.

thanks

Mohammed JH