How to change the view from userdisp.aspx to MySite View?
This is fairly simple and easy,,,
you need your MySite URL, e.g. mysite url is https://sharepointserver:8085
now, go to your site collcetion --> site actions --> modify all site settings --> under Site Collection Administration: Portal site connection
here go and paste your URL and give it a name,,,
result: whenever you click on user, it will redirect you to mysite