change url to userprofile

I have been using sh404SEF alongwith community builder.
I have enabled the option to use CB username with profile url and have also used htaccess to remove index.php/ from url
So now for any viewer of the profile(other than the owner,say abc) the url looks like www.sitename.com/abc
But when the owner visits his own profile, the link looks like www.sitename.com/Community.html....now i want to setup a redirect such that everytime when abc visits his own profile, the link appears to be as www.sitename.com/abc .
How can I do that?
In short,I want to setup a redirect from index.php?option=com_comprofiler&Itemid=490&lang=en to index.php?option=com_comprofiler&Itemid=490&lang=en&task=userprofile&user=[user_id] Before Profile Display....
If I use the Before Profile Display trigger in Auto Actions,then it starts flooding because of redirect requests happening infinitely. How can i put a condition to check current url?

We're not sh404SEF developers nor do we support its usage. You'll need to ask them the best way to rewrite the URL. A redirect won't work, because plugins using the URL without &user would break on POST.