I have this happen ALOT too. Heres a fresh example from less then 10 mins ago :P
Setting up for brawlers, Our team is totally organized, EXCEPT for one silent player named "TheTrollMachine1" ... :/
Only open position was JG, and with 1 second to go we assume he's just AFK, but then he picks
with
... >:(
I don't think I even need to elaborate on how bad this would screw a team in a normal game, much less brawlers where enemy's can now freely farm our jungle and out scale our minions!
So I bite the bullet and dodge, and now I'm the one suspended! :P
There needs to be some kind of boot option, even if it prolongs set ups a bit.