I just waited until it went away, about like 5-10min. just a bug that needs to be looked at somewhere down the line.
If it happens to me again, I'll just take it that its a state mandated break decreed by yoshi. God knows I need to be forced to hop off this addiction every once in a while
Started up a match and was brought back to the lobby. After that I was unable to rejoin, not even after i restarted my game. It was one of those insta-queue matches too.
At the time of writing this sentence i noticed i could start queuing for a game again, so maybe its just some bug.