i blocked a player, and i got stuck playing still with him still?

While it seems like a good idea, blocking a player from being able to play a game with you can SEVERELY screw up match making.

Blocking only prevents people from sending u friend requests. Nothing else.

wow, that wonderful! [zombie-brand-facepalm]

If trolls and vandals are a problem, then try upvoting a solution thread: http://boards.na.leagueoflegends.com/en/c/gameplay-balance/EV8EwVz5-suggestion-prevent-blocked-players-from-joining-the-same-team