You have more than likely have a false sense of security as dial thermometers are not accurate and can be off by 10 degrees.
The combination of low temps + stress due to an oversized enclosure can have cause a RI
You need to take your BP to an herp vet, here is how to find one http://www.arav.org/USMembers.htm
Meanwhile while waiting for your appointment raise your temps and humidity.
Remember RI do not heal on their own and can be fatal if left untreated.
I would suggest you to downsize the enclosure and buy a digital thermometer/hygrometer such as thisat Walmart (Your temps must be 80-84 on the cool side and 90-94 on the warm side with no night drop - Temps must be measured at the bottom of the enclosure), provide 2 tight identical hides with all sides touching your BP's body as well as belly heat, if you don't already do that.