I found several posting regarding this problem for my Samsung refrigerator model which were very helpful.
I could probably have just defrosted the refrigerator to see if the fan would restart but I also had a long term fix I wanted to try (see below) which I would need to remove the cover to do anyway.
I also could have only purchased a new fan (in case it was burnt out from being stuck with ice) but I know my limited skills/patience when it comes to things like this and figured I'd just buy the whole cover which came with the fan in case I broke something...which I did...while removing the cover, ice was still sticking it to the evaporator, I pulled too hard, and destroyed the foam insulation.
After removing the cover, I disconnected the fan plugs and defrosting the ice (which, if I only did in the first place, may have solved the problem if the fan wasn't burnt out).
For a (hopefully) long term fix, I then used another suggestion from a post and moved a temperature sensor from a tube on the upper right of the evaporator to the upper middle of the evaporator as a better way to sense where the ice starts to build up...we'll have to see if it ultimately works as it originally took about 2.5 years for it to build up in the first place.
I then plugged in the new fan connectors and buttoned everything back up.
Before the fix, my refrigerator temps were 48F to 50F and are now around 37F to 40F.
All together, not a hard fix and I'm happy so far with the results! :-)