I think that your paranoia is ruining your experience of your phone. I'm not saying it's not justified but I hope you take my advice so you can build up more confidence in the phone and enjoy it for the reasons you purchased it. If you read my post, then you know not only how to resolve the problem but how to prevent it.
I personally don't use the LTE on/off switch anymore because I felt it was causing network issues, again maybe a coincidence, but after uninstall a lot less signal drops and 1X connections. Unlike the TBOLT, the Rezound has a setting in the network settings that will enable you to switch off LTE if you need to. Don't let your phone die, or turn off your phone if the LTE network is not checked.
So, turn your phone off and not worry about it as long as you abide by the above guidelines. If it turns out I'm wrong, then it's easy to get it back up and running. Since you're worried, go through a dry run of where to switch the LTE on and off so you'll be able to do it without frustration. Once I read the OP I knew what to do and it took me two restarts. One with the back off and then with the back on. Done!
Enjoy your phone dude! Worry about other things..... like when ICS will come to us.
KORM via the beast known as the Rezound.
I just hate worrying about the boot loop. I have no plans on getting a different phone anytime soon. Hopefully it gets fixed soon.