[Harp-L] Jam session etiquette question

[Big Steve Blues <bigsteveblues@xxxxxxxxx>]

Fellow players,

I attended a jam session where I am known to the regulars.

I was grouped together with two guitarists (neither of whom I had played
with before), a pianist, a bassist and a drummer (who also happens to be a
member
of my band).

At this jam, at least 80% of the time or more, the front person/vocalist
calls the tunes. In this case, it was me.

After one or two numbers (I forget), one of the guitarists says (not
suggests or asks, but announces) "let me call one".

He then proceeds to grumble about needing to play something "funky", not all
this "same old thing".
He calls a "funk" tune in C. Think of a "Pick Up The Pieces"-style beat, but
minus the intricate instrumental parts.
This is barre-chord strummy-strum-strum stuff in a, gee, 12-bar pattern.
Sounded like the "same old thing"
but with a disco beat replacing a shuffle. I digress...

Funk-guy decides to give the other guitarist a solo. Fine with all of us;
it's his call.

I raise my harp and mic to my mouth to play some comp lines/chords, as I
usually do behind a vocal or solo,
hopefully sparingly and tastefully.

No sooner do I get the mic to my face then Mr. Funk swats me on the shoulder
and snaps, "hey! he's SOLOING!"
as if I needed to stop playing entirely for the next 24-36 bars.

I bit my tongue and laid out for most of that solo. I don't remember what
else I did until the end of the tune.
The pianist, who knows me from this jam, was watching my blood boil as we
played on.

When that song came to a close, I turned, off mic, to Funk Brother and said,
relatively quietly, approximately this (sanitized for your protection):

"Have you ever played with a horn player before? Would you tell a horn
player to take his horn out of his mouth in the middle of a song?
I was comping behind the other guitarist like I do all the time. Don't
(expletive) cut me off like that. I've been playing for 20 (colorful
adjective)
years. I don't know who you think you are."

I suppose I would have reacted differently if he had leaned in and suggested
mid-tune that I lay out for a chorus or two or what-have-you.

I found the bump on the arm and his snotty tone rude to say the least.

The remaining songs we played together were uneventful; I gave him his fair
share of choruses with no malice aforethought.

As I left for the evening, I complimented him on his playing as I did every
other musician I played with.

I just can't believe someone would behave that way to a total stranger. I
have gotten called up at jams to back up
everyone from club-quality singers to kick-ass guitarists to drunken, total
rank amateurs who had no business being
on stage. I've never said a word; I always play my absolute best and don't
show any disapproval or negativity at all.

Am I totally wrong, was I too harsh, am I totally right or some degree of
each?