So what you are saying is that you are / were desperate? From what I hear some 30 ish pilots have left, out of 600 ish that's around 5%, not huge and the majority are younger lads who are going to BA. I have several friends who are from my former airline working at Jet2, they paint a very very different picture to you. In fact I would warn those going to BA as i think they may get a shock! I have seen quite a few changes here over the past few years and its not pleasant, particularly if you are short haul, but that's another story.
Personally if i hated my employer as much as you do I would simply look elsewhere and get out. From what I hear from my friends there and former Jet2 guys who work here now its not such a bad place to be.