Is it possible to seize an oil pump? I'm trying to figure out if I did that accidentally.

Basically, I had my project 240 in my garage for the past 8 months. During the 8 months the vehicle was not moved or started. I did an oil change right when I pulled it in (8 months ago). A few months later I noticed a pool of oil below the engine. I found that I had not tightened the oil pan bolt enough and it leaked for several months. I tightened the nut more and checked the oil level and it appeared to be within tolerance. Then last week I decided to pull it out to clean up the oil spot.

Before starting it after 8 months, I checked the fuel pumps and found the in-tank pump not running (again). I had problems with the pumps last year. The fuel tank had been pulled and sat outside with fuel in it. When it was re-installed, the smell of the gas was really bad, so it was dumped, but the smell remained even now. I pulled the in-tank pump and got it working again but did still smell that bad gas smell in the tank. I put it all back together and was able to start the vehicle fairly easily. I pulled it out and let it run for 20-30 minutes until it came up to operating temp. I could hear it click over into closed loop at one point so it did get hot. I cleaned up my mess and then pulled it back into the garage. This week I was going to pull it out again and I'm unable to get it started at all... I just checked the oil and it was not showing up on the dipstick...... uhoh!

Is it possible that I seized the oil pump with low oil. Maybe not totally seized, but too gummed up to operate? After adding more oil today, it was a missing about a quart.

I'm also noticing a smell of the bad gasoline in the oil (from the oil cap). Camshaft appears to have adequate oil. Is the oil a problem now too and should be changed again? Or could that just be from combustion of some of the bad gas that stuck around in the system?
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'82 245 B21F-MPG-LH 1.0, '83 244 B21FT-K-Jet, '86 244 B23F-LH 2.0