OP2 Band 12 and T-Mobile

So I guess this is good news and bad news for T-Mobile users. The OnePlus 2 supports band 12. Awesome, right? Not quite. They did not get the T-Mobile VoLTE certification, so now those of us with T-Mobile face an issue. If you are in an area where band 12 is the strongest signal, you will likely not be able to receive/send calls or text because there is no VoLTE.

With that said - is there any way to "disable" a network band yourself in the software?