Originally Posted by EWR764

Or is it an issue where, under normal circumstances, the returns may be caused items that can be MEL'd, deferred or quick-fixed (with a little hustle), and now these warts are being treated as tumors, therefore leading to a higher-than-usual cancellation rate? Combine that with the fact that the company and pilots could not agree on a proposal to relax contractual duty time rules (for more pay) closer to FAA minimums to address this very situation and you have some of the key the ingredients for a crew time-out.

I'm not a pilot nor do I work for the company, but anecdotally, I hear of that sort of thing happening too.