Leonid and Alakata,
I would suggest investigating using iControl to look at and clear the RamCache (http://devcentral.f5.com/wiki/default.aspx/iControl/LocalLB__RAMCacheInformation.html). I plan on doing the same thing but haven’t had the opportunity to do it yet, but I would suggest doing it via a Website and have the Credentials (because the account would need elevated permissions and is not something you would want to release into the wild) contained within the app.config / web.config which remain in a controlled server environment away from the user.
Best practices would to never release an account in any way, even if it is compiled within an application since it could still be captured and misused.