Got to have my wife pull me out of the fuel island at the gas station. Was able to pop the clutch and start it once I was rolling.
Thought I need a jump-start, had a jump pack, that didn't work, tried jumper cables to one battery and the jump pack on the other, nothing but a 'click'.
Turned out the starter contacts were stuck and subsequently fried.
I had a spare 24v starter on hand, different configuration than mine, so it won't fit, but was able to rob contacts and plunger out of it to get me back up and starting while I look for a rebuild kit.
28100-56181 is the part number for the starter in the truck. I've found some
new versions, non-OEM of course and a few hundred bucks. I'm a bit leery of the knock-off ones though.
I've also struck-out on finding a rebuild kit specific to that number but have found some 'Denso' generic kits on Ebay for $10-12, with free shipping. I'm willing to throw $12 away to see if they'll work.
My local auto-electric rebuilder was not too helpful, but I my take the old parts (plunger and contacts) up there to see if they'd be willing to dig around for spares.
Edit: Gave the local auto-electric guy the Nippon-Denso part number 128000-3080 and he was able to verify that he can get the plunger and contacts for me.