Mark,
A tired spine from all that you do with your business and then a little flight that you gave Zoey sounds just like perfect fodder for *an episode* arising from whatever interacting spinal parts.
Prolonged flexion or repeated flexion and or flexion with any sudden extreme movement seems to be a real shoe in for a rapid onset flare up for me (maybe not as rapid as prolonged sitting).
Be careful young man and thanks for updating us with the good, the bad,and the ugly.. then good again (at least lumbar wise). Here's hoping all's OK in there
