Lance, I didn't realize you were on this forum, too.

You have a lot to learn!

Troll alert.

Harmbu, I understand the situation in the OP. When I coached, I would've come down the line and questioned the PU just because his poor mechanics on this play shows a sign of doubt.
To keep from avoiding the PU's space, I always turned 90 degrees where my shoulder, not my chest, was toward the umpire. Then, if there was aggression, it came from him. And I wouldn't worry about the "glare", because this just means you accomplished what you really went down there for in the first place (unless you really thought he would change his call).
It's a baseball deal, and if he is professional, which may not be the case in this situation, he will call pitches and not let it effect the rest of the game.

I don't see any need to ask my partner if he saw the batter get hit. I tell the BU in the pregame to come in immediately if he sees something I don't (ie, ball batted off the foot, etc.)
But if I did ask, he better not shrug his shoulders. I want a signal, as was mentioned in an earlier post.

With all due respect, SDS, I could give a %^&$# less about the last one. Since they don't exist any other time, I don't care a flip about what they think about the end result. (Maybe I don't feel THAT strongly, in retrospect, but still....)

Here's a question, to change horses mid-stream: is anyone else out there as uncomfortable as I am when the coaches want to shake hands with me at the end of a game? Winning team, losing team, head coachs, AC, whatever - the last thing I want to do at the end of the game is shake hands.

I'm not trying to sound like an anti-social troglodyte, but I'm trying to act like a pro out there, and I would just as soon 'pick up' my partner and find that gate in the fence at the end. And this happens at HS as well as local rec leagues - not every coach, but there are some at every level. Some will speak and thank me/us, or say "good game, blue/Mr ump/whatever", and I just try to nod or say 'your welcome,' or some other minimalist response, but I'd almost prefer to just leave.

Part of it's because I umpire no closer than 35 miles from my home, so I have no ties to any league or area. But am I over-reacting to feel this way?

The Lone Ranger rides again
 

I like to imagine the coaches saying "Who was that masked man?"

I was just trying to think of anything else an assistant coach might have to do or say. If they say anything to me, it better be "nice game, sir.":)

While you shouldn't seek them out to shake hands, if you run into them while on your way to the nearest gate, then you should be polite / professional (which it sounds like you are).