I was frustrated from digging through the schematics and metering.
I walked out in the garage and opened the trunk for something and it hit me that the trunk light hadn't been working since the locking problem started.
I immediately checked the interior light, since I knew they were on a common circuit, and neither bulb ( LED ) worked there either.
I dug back into the schematics and saw that F9 not only fed the lights, but also provided B+ to the BCM. EUREKA !!!!

( I suspect that particular lead to the BCM is used to power the CAN bus to the locking pump module )

I replaced the fuse with same amperage, and it has not blown again, so I have no idea what took it out initially.