Are you positive it wasn't instead because of your recent Hecarim ranked game where you went 2/22/6 in 20:22 minutes, built Mobility Boots + Double Zeal (going for a third), ran Ghost + Teleport, and died 12 times in mid lane, four times under the enemy top tower, and three times in bot lane? Are you absolutely positive?
Edit: Although this is the last game on the OP's account, it is two years old, and apparently (according to a later post by the OP) this post is in reference to a more recent game on (I assume) a separate account. Although evidence is strong that the OP was once definitely intentionally throwing a game, we should wait for information on the current account before judging this case.