"Dear _______:
In regards to your question pertaining to the recent removal of your name and picture from my top friends, I hereby provide you with following as a viable explanation as to my current actions.
This has been a most difficult decision because I knew the repercussions of the actions I have undertaken. These repercussions being having to write such a trite and pointless letter to explain to you something that should need no explanation. However, since you insist, I will provide you with the following rationalization in order to provide a cessation of further communication in this matter:
First of all, I can boldly state that I do not need to determine the status of our friendship through the placement of your picture and name on an online networking site. The childish nature of that ideology shows to me that you therefore should not be located in a "top spot" on my front page. Since my personal MySpace page is surfed several hundred times a day, and I feel that you would be a bad representation of my person.
The highschool mentality of your request of me to provide you with a verification of status by placement on such a network site is something I do not appreciate nor something I want to associate with. However, if you need to look deeper into the meaning, the fact that I removed you from my top friends should denote an absolute detachment in regards to the status of our current relationship.
In closing, please feel free to return the favor and remove me from your friends list. At this point, I'd only be doing you a favor by staying up there and I don't feel that you deserve that. Trust me, I'll understand and I won't force you to write me a letter of explanation.
Sincerely,
(Name Here)