This really happened. Your not going to believe it!

[senior]

I won't try to vouch for FED rules, but in OBR you've got a play that's over with one run in, one out at first, and a retired batter with a sore mouth.
The running lane doesn't enter into your play at all because it is only considered on a ball being fielded TO first. Once the out was made at first, your runner was no different than a runner retired as the lead out on any double play attempt.
It isn't believable that your retired batter-runner would interfere with the throw because of the obvious consequences. More than likely, he was "surprised" by the throw, and will bear scars as a result, but he isn't expected to "evaporate" after a put-out, he just can't interfere intentionally with the continuing play.