Removed both games, since nobody has proof of who disconnected. From the rules:
In case of a dispute, if it cannot be determined who disconnected from the game, the game will be considered invalid for both parties.
As far as the rest of this case:
You pick without consulting the opponent, you should say "I'm a P picker" beforehand, and then they can decide whether to play you or not.
If opponent picks protoss at the last second, you may announce that and leave the game as soon as it starts and they won't be allowed to report. But since you stayed, you agreed to play, so this is not relevant to this case.