I re-validated the frozen insulin thing this morning. I put the vial in the freezer when this thread first came out - June 2017. It was in the freezer 10 months and it was completely frozen solid, not just a little bit slushy. A total block of ice! (it was a vial of NovoLog, BTW)
My pod expired at 7am, and I had no basal insulin since that time. You can see the BG climbing. I took the formerly frozen insulin at 9:13 am
Numbers from my BG meter:
9:13 am - 134, dose of NovoLog
9:27 am - 161
9:44 am - 154
9:58 am - 118
10:25 am - 42
And then I drank some coffee w/ sugar to stop the silliness.
The absolute validation for me is the fact that I had no basal since earlier in the morning, no pod running, and no other insulin but the formerly frozen NovoLog. And the result was unquestionable.
As @Chris said earlier, the frozen stuff works.