Not without a lot of messing around (which was why I asked about the high temperature requirement).

Easiest would be to power everything from 3.3 V (or thereabouts) the modules can go up to 3.6V max, so you could run everything from a standard 3.3V supply/battery set up.

I haven't tried an SPI interface on a module, but I have implemented one on a cortex M1 before, and it wasn't hard (they have all the support built in).

I also interfaced an external break-out board to a module via I2C and had no real difficulties - if the SPI interface is as easy, then that may be the way to go.

You would be breaking new ground though, so be sure to let us know how you get on!