UPDATE: SUCCESS!!
I am over the moon right now! After trying again on Tuesday (a week after his tank was cleaned and I changed out the aspen for coconut fiber), he didn't want to eat the weaned rat I had for him. I found another reptile/pet store in the area, albeit a bit more of a drive, and asked for a rat pup and some gerbil and mouse bedding. While the gerbil bedding had just been replaced and wasn't scented all too much the mouse stuff was. This ended up pointless, however, because upon warming the rat with a hair dryer after thawing he ended up eating! He gave it a quick look over before ever so silently snapping at the rat and devouring it. I stood back so as to not scare him and he appears to have finished it off without issue!
After eating he was still pretty active for a while, though. He spent the next little while hovering at the glass and the top of the tank as he usually does before retreating to his cold hut to contently watch as I cleaned up.
I'm going to give him a couple weeks of following through with feedings hopefully just like this one. I will continue to update this thread.
For now, I'd just like to thank every one of you that has helped me with this problem. Thank you all for being so welcoming, supportive, and patient with a newbie like me.