Pulled the injectors and took a look...Everything looks good. Reinstalled and went for another drive with no problems.
I'm going to do a compression check in a couple of weeks. Anything cylinder related will most likely show up then, and if so I can then do a leak down. At that time I'll drain and look at the engine oil too. I will post back with the results.
Until then, I'm going to continue to drive around in my general area, hoping (and not hoping

) that the problem re-occurs and I can get back to my garage to do some troubleshooting...Maybe something got 'hung up' temporarily, injector, plug not working, valve...who knows
Thanks for the input fellas