Just reading through this so not sure if this was answered, but it was John Hoffman. He was awesome to have on staff back then because he did all the human interest stuff in the minor leaguers.
He's in St. Louis now with his wife.
I just had an idea I thought was amusing.
During a ST game a team playing against the Astros should just have the catcher yell to the pitcher what pitch to throw.
"Hey guys, I know they won't let you do it the high tech way anymore so we are going to help you out" Fastball, Curve and so forth. For the second batter the pitcher could yell back, no, and the catcher could call out a different pitch.