OK, now that I can log in again I'll post an update. Finally got the chance to work on the car a bit. Replaced both CV axles (and rear brakes as well). Had to buy new tools to get the axle nuts off. Right side has been replaced for sure at some point, as it had a Napa sticker on it. I'm pretty sure that one was still OK, mostly because of what I found on the left side. I'll post a link to pics below. Left side inner boot had loosened just bit, and started puking grease sometime between October and now. I couldn't get a good angle to pop the inner cup out of that damn clip, so I ended up just pulling the axle apart in the car. One of the three bearings came apart immediately, and looking inside I found several of the needles floating around in the grease. I'm actually amazed it wasn't making more noise/vibrations. I've kind of been going back and forth with myself, as the vibrations seemed to come and go. Actually, mostly it was a small enough vibration that I thought is was just the crappy snow tires/rims I have on it right now. So, if anyone reads this in the future, my symptoms where not that bad, but the axle is toast. Vibration under acceleration only: check your axles. The job took about 8 hours, but that includes two 20 mile trips to town for tools and lunch in between. Of course, rear brakes only took maybe 45 minutes.
https://photos.app.goo.gl/mmgPPxYFnW8D6QUo2