A respiratory infection typically should not occur as long as it is clean environment with proper temps - RI occurs with the introduction of bacteria into the respiratory tract usually when the animal has a suppressed immune system (due to low temps and/or stress or other illness.) So as long as the cage is clean, the snake has no prior history with RI's and the temps are right you shouldn't have any issues. This is not to say proper temps will prevent an RI - plenty of snakes have come down with nasty RI's with proper temps. Some bacterial infections are worse than others and no matter the snake's immune system can hit them hard. Stress from moving shouldn't cause an RI on it's own, most RI's are bacterial so that would be the true underlying cause if the snake ends up getting sick. Is the snake exhibiting any symptoms? Good luck!

Like Abi said  the only reason ( In my Mind )  That an animal could get an RI  from temps  that are to high is the addded stress ,, and the other factors  would have to be present as well (  dirty cage , Mold ,  what not ) 

Just want to add that a problem with ball pythons that I've seen is keeping them to hot and dry. The lack of humidity for those not realizing that though they may come for a hot dry climate they live in burrows where there is humidity. I say it's like us getting cotton mouth. To me a RI is just that, an respitory infection. Habitat temps could cause stress and make it harder to fight off infection but don't see where they alone cause it. In the case of low temps it usually also involes too humid condition allowing for bacteria to grow plus stress of cold blooded animal not having need heat function properly.

I agree with comments stated above, especially with Lashman.  You mentioned about temps, but nothing about humidity.  IMO, there are many factors including stress, but heat and humidity are the main causes of RI.  I don't know what you are using to heat the cage, but heat lamp will quickly dry up the air inside the cage.  If that's the only source of heat, regular misting is needed.  It sounds like you got proper temps, but humidity needs to be between 60% - 70% for BPs.  I recommend getting a digital hygrometer and thermometer to maintain proper conditions.  Good luck.

Thanks for everyone's answers.  Luckily, I don't have a snake with an RI currently, but I am trying to learn as much as I can.  I would like to rescue reptiles in the future, and I am always thinking of random questions.  I did find some great information on bacterial infections in reptiles.  You can check it out here, http://www.merckvetmanual.com/mvm/index.jsp?cfile=htm/bc/171407.htm