Thanks everyone.. I appreciate the kind words.
Anhel123, I did spend the entire morning and part of the afternoon cleaning all the bits, parts, and whatnots. I threw away filters and sponges, sprayed/soaked everything I could in white vinegar, scrubbed everything I could with it, rinsed, rinsed, and rinsed again - and then let everything air dry and stored it all away. I don't know how much that would be considered "disinfecting" but from what I had read at the time, it seemed that using vinegar to clean everything would be enough, at least for now.
I do want to get another betta at some point (I saw this AMAZING powder blue male with some of the coolest pectoral fins I've ever seen... hard to described but it had really super ruffly pectoral fins at PetCo yesterday when I was getting a kritter keeper) but I'm not sure when that will happen. It's up in the air at this point.
Again, thanks everyone.. It's good to know that I have a large group of betta lovers to lean on during these tough times. No one will quite understand like the good people on this site.