current state:
Deranking to play with friends is not viable in this game cuz of ♥♥♥♥♥♥♥..

Game Suspensions
Counter-Strike: Global Offensive - Expires on Oct 2, 2016.
Game suspensions are applied when a player is repeatedly being disruptive to other players in-game. Unlike a VAC or Game Ban, a Game Suspension will expire after a period of time.

MAIN ACCOUNT:
http://steamproxy.net/profiles/76561198007001706/

And a little thoughts to valve:
You should probably do a rank reset as an option, when a guy wants to play with his low rank friends and teach something about the game.. Thanks for attention.