You're absolutely sure there's been no spikes in heat? Thermostat(s) still working correctly and/or room temps haven't spiked? Did you change your food resource anytime recently? Did you use PAM recently?
In the first video, it appears to be neuro-based for sure... development of these symptoms are typically associated with poisoning (insecticides, etc) or over-heating.
Have you handled and/or been around anyone's boas recently? IBD is rare, but just ruling that out with the question.
At the end of the day, if you're worried, you need to go to a vet. I know it's 3.5 hours away, but your anxiety and worry are only going to get worse until you KNOW something - and no one can tell you anything except a vet.