Prevent person.aspx redirect from userdisp.aspx

Scenario:
A SharePoint environment is newly built with its dedicated domain controller (DC) and has migrated content from another SP environment with a seperate DC. The migrated content has existing users which needs to be migrated to the new domain. Used stsadm -o migrateuser command to achieve the same. When user clicks on the new converted user name in the site collection user groups page, the user is now redirected to person.aspx rather than userdisp.aspx

Solution:
This behaviour is expected because,
a. MySite feature is enabled on the farm which embedds a redirectcontrol in the userdispform.aspx page which causes the redirect.
b. The user has a profile in SSP.

We uninstalled the Mysite feature from farm features using stsadm. Remember it is a hidden feature.