What threw me was the term “staffer”. Cruz has thousands of volunteers (including me) who are unpaid and might loosely be called “staffers”. Seven quitting out of thousands might not be a big deal. The lack of anyone willing to speak, or evidence that they jumped to another campaign was also telling.
I have found Conservative Tree House to be over the top myself. I am a Cruz supporter who does his best to be truthful in his posts, because truthful is good in and of itself, and because many Trump supporters are acting in good faith and deserve a hearing (some of them, as with ANY campaign, not so much). When a winner is decided, we are going to have to be on the same team, against Team Hillary or whoever.
-- Seven quitting out of thousands might not be a big deal. --
Nobody "up high" with half an ounce of integrity quits three days before the election.