Game lost because of Riot.

During the last crucial team-fight of my game, 3 of us were retreating away from 5 members of the enemy team, they were all chasing us and while doing so lined up almost perfectly in a straight line. I saw the opportunity and turned around, just as I was about to combo all of my spells as a Syndra onto all 5 members of their team, I get a giant lag spike. Oh, we have all had lag spikes, must of just been unlucky timing right? I think this is a sham. If you watch the video I have linked you can see my Ping and FPS, if my computer lagged or my internet lagged, wouldn't one of those numbers not drop? I believe it was either someone lag switching my game somehow but is unlikely... or more likely, the Riot servers are a piece of crap and apparently all the money they make isn't being used to actually make the game better. The timing is just way to weird to just be a regular lag spike.. My comp has GTX 750 TI, i5, 16G Ram, and I am using Fiber Optic internet , I never lag, ever, well actually, I guess not! I believe if I had not lagged we would of won the fight, and won the game off of the fight. THANKS RIOT.