Tahm Kench, The Troll King

Okay so overall I like the idea of Tahm. He's fun to play and a great asset to an ADC when played correctly. But he is also a gift from the gods to any troll on league. Just recently I was playing a ranked game. This guy on my team was second pick and wanted to support, insta locked Tahm. All seemed great until he went full troll mode. He purposely fed the enemy 7 kills by just running at them. Any chance he had he would swallow up our ADC and throw him into the enemy team to die. Once the ADC had had enough and left bot lane (don't blame him one bit) Tahm then went all around the map, swallowing teammates up and throwing them to a Xerath who would land a stun and wreck them. Any chance he had he would stop your from getting a kill and purposely feeding the enemy team. The point I'm getting at is I hate trolls, toxic people and the way Tahms kit works. It SERIOUSLY needs to have the option for the teammate (the one who gets swallowed) to click out of it. Treat it like Kalista's ult. Although you don't have control over when it starts to take place you have an option to leave it. Without that feature trolls will keep on trolling. It wouldn't really be a hard or big change to Tahm. He would feel the same and play the same but honest players can have the option of avoiding being slaughtered on purpose. @Riot please look into this.