Engine Locked Need Help

This is going to be detailed so beware!
In Nevada on the 318 going towards Ely last night. I pull over on the shoulder and felt a bump. Got out of my truck to see what happened and noticed fluid leaking.
My oil pan was punctured by the metal reflector signs. After seeing that, my engine turned off. I did not attempt to turn the engine back on as the oil was leaking.
There was no cellphone service there and it’s around 10pm. After putting my triangles out and grabbing something to defend myself from wild animals I start walking.
A Good Samaritan stops and asks if I’m ok.
I explain my situation and ask him for a ride to a hotel. We try a couple of towns: Alamo, and Lund. Either sold out or were closed. He was going toward Ely and offered to drop me off there. Stayed at the motel 6 and next morning started calling roadside. Settled on a decent one-not the most experienced one out of Las Vegas.
I was able to get a cab out of Ely to my truck near mile marker 13 by Hiko.
Mechanic came with oil pan and oil and went to work. After about 4 hrs I was ready to start the truck.
Truck would not start. You can hear the starter clicking but no cranking whatsoever. He said I have engine problems.
I said might be the batteries so we connected the cables. Nothing. He tested the batteries and they read 12.9 volts.
I said what about priming the truck he said not needed as we didn’t touch fuel system.
I said what about air… he had me fan the brakes earlier in the day because he was going to jack the truck up, he said doesn’t matter as long as I’m in neutral.
So we started today driving towards Las Vegas so I can get a hotel. He called his boss and his boss gave him instructions on how he can see if he can manually turn the engine with some flathead screw drivers. So we went back to the truck and still no luck and he said once again that my engine is locked.
I’m now in a Las Vegas hotel trying to figure out my best options. My truck has a small oversize load on it that would need to get repowered some how and that won’t happen until Monday. In the mean time:
Could my engine have been locked? Could some other wire or thing have something to do with this issue of metal stake on the shoulder? please see attached photos of metal stake, my oil pan and even the plastic part of the oil pump that was damaged.

 

Pictures

 

I really don’t want to call a wrecker, I really don’t want to file an insurance claim, I really don’t want to call the police and get a report… but these are the only options I see that I have coming my way.
I am leased on and owe about 35k on the truck, trailer is paid off. Truck has 640k miles on it. Insurance has a $2500 deductible. I will be filing a claim through NDOT but not if I have to call the wrecker. That would take too long for me to get reimbursed and that’s if Ndot even approved my claim. The metal reflector was already bent to the ground and damaged as you can see I have no damage to my bumper. I am running out of cash to through at this situation.