Quick running update.
I've started to get my volume back up after my "November off".  Strava Summit now has a fitness score (it's like they know exactly how to push my buttons).  Before I started taking time off, I peaked at "99".  Through November, I dropped to 71, a low not seen since May of this year.   :( 
I've got my volume back up to about 65kmpw (40mpw), and have dragged my fitness score back up to 92.  I definitely think that's exaggerating, but if it gets measured, #######it, I'm going to manage to it!
Butt has been pretty sore, but I'm just starting to get used to running through the pain.  Did some intervals yesterday on the punishment device.  First time running any meaningful kms sub-5:00/km (sub-8:00/mi) since the HM back in Nov.  Butt is really feeling it today (sitting on an airplane for six hours yesterday didn't help, either).
Still trying to get in to see a doctor about my butt, but a combination of work, travel, procrastination, and the clinic not calling me back  

 , I'm still not making any progress there.  
Anyways, this was a lot of nothing, but I appreciate the opportunity to share.  It's nice to get the mileage back up, but I don't think I'm in a position to run the full marathon in Houston a month from now.  The entry fee is paid, and can't be deferred, but as of this moment, I'm not racing that race.  Sigh.  Hoping for a 
miracle that could change my thinking there.