inadvertant base on balls

[JefferMC]

The Umpire is always right.

Except when he makes a mistake. Like forgetting the count. Or worse, applying a rule when it doesn't apply.

I don't think you're going to find a rule to cover this situation, because the rules assume that the umpires are inhumanly perfect. If the umpire called Ball Four and/or indicated (by pointing to 1B or whatever errant signal) the award of 1B, then the defense was told that they couldn't make a play on the advancing runners and the fact that the ball was live is irrelevant until they reached the awarded base.

You just gotta' put them back.