Here is some I didn't know until I hired out:
http://www.youtube.com/watch?v=m0Sy6sBsbcg
I dig your video, DJ. I'm not sure where you work, but I can tell you don't work for BNSF or UP.
Just for some perspective, here's my take on your terms from a BNSF piglet's point of view:
I've never heard "outlaw" as you use it, but I'd recognize what it meant right away. Here in Texas we are "dead on the law" or "we've gone dead."
The way you use "deadhead," as a verb meaning "to travel in a company van," is how we use the word "limo," also as a verb. Additionally, we use "limo" as a noun to describe the van we're riding in, though they are far from the limo most people think of. As far as deadhead is concerned, we only "deadhead" when we are making a paid trip where we are not working but are only traveling as a train crew either in a van, on a train or on Amtrak. A dispatcher might order us to "tie the train down in Smith Siding and limo to the hotel" but not "deadhead to the hotel." Deadhead for us is the entire trip, not the portion completed in the van.
I've never heard or used 707 so I figure that must be a non-GCOR railroad thing. BNSF and UP use the term "Form B". You talk to the MOW foreman and get talked through his Form B limits. It differs from BNSF to UP, but sounds very similar to how you've described 707. If I heard it for the first time, I'd wonder why you were talking about an old airliner....
For crew members going in between coupled equipment, where you use 3 step, we use "going in between" and the engineer responds "BNSF 1234 set and centered for the conductor, over." We omit the gen. field switch and instead only center the reverser and fully apply the independent brake. When I encounter UP and KCS crews, I hear them say, "going into your/the Red Zone" around here instead of saying "going in between."
EOT is sometimes called an EOT, mostly it's ETD (End of Train Device, End of train Telemetry Device) or FRED (Flashing Rear End Device). My brother works up north and they call the ETD "Fred" and the HTD "Mary," as in, "Fred and Mary are talking to each other," which must be uttered during the comm. test. Also, another term for dumping the air used commonly here is "plug it."
Highball - I also hear it and use it as your first definition, but I've never heard it used to described track gangs or MOW workers. We use it commonly as your last example, "highball that setout" or "highball the mill" (don't spot that industry).
Ah yes, foamer. Long ago I heard it as an acronym for Foaming Over At the Mouth Excited Railfan. Used constantly, along with other derogatory terms like "drooler" or "terrorist." Like you, I don't know why it's okay to work for an airline as a pilot or mechanic and be a plane junkie but if you even think about steel wheels any time other than when doing your job you must have a screw loose. It is what it is and I keep my mouth shut.
Some bonus terms:
Making a joint: on the railroad, to couple cars or engines together. Can be heard on the radio as "Foreman has your point from the ground, back up ten cars to a joint." Also, "...back up ten cars to couple up/a coupling/a hook."
On a rollby inspection, "Fred's hanging" on a conventional train and "Porch light's burning" on a DP train. My favorite one came from an old head just before he retired, "all dark no sparks, northbounder!"
Finally, "piglet" - that's a student engineer, as in not yet a hogger/hoghead. And hogger or hoghead? That is the engineer, who were so named because they'd have to stick not only their head out of the window, but also part of their body, to be able to see hand signals for moves in the yard. When the engineer would turn his head, his entire upper body would move with it, like a hog trying to turn his head.
It's a whole different world out here. Funny thing is, my wife and kids have heard my stories so many times even they know what I'm talking about now.