As you good people are all aware, a year ago I accepted a job at Cosimo's institution--starting, for sabbatical-repayment reasons, in August 2015. But even once I start that job, almost 18 months after acceptance, I won't have fully left my current one. Instead, I'm taking an unpaid leave.
This is partly a pragmatic decision; if the Steven Salaita case has taught academics anything, it's the wisdom of disaster insurance. My own inflammatory opinions are mostly confined to long-dead literary figures and are unlikely to piss off any trustees or Boards of Whatever.* Still, flukey things happen, and in a field with extreme employment precarity, it's better to be on the safe side.
But taking a leave is also about keeping my options open and making sure the move is the right one. In addition to being able to live with my spouse, my new job offers me several things that my current one doesn't, and I'm very much looking forward to those things. But my current job, in turn, has strengths that my new one does not.
This slo-mo, not-quite-letting-go is pretty standard in academia; I know lots of people who have taken leaves rather than resigning outright--some of whom eventually returned, most of whom did not. Still, it probably seems bizarre to people in other industries, and it feels a bit bizarre to me, too. In most areas of life, I'm the kind of person who wants to lock decisions down. I hate endless dithering and lack of closure (which is why so many meetings run by academics drive me insane).
But in most industries, the consequences of an employment slip-up or a bad decision aren't grievous; you just move to a third job or return to your previous employer. When my dad decided to return, after a year of working for my uncle, to the government job he'd held for more than a decade, he could do it. He was docked a GS rank (which he later regained), but he could do it.
Academia is different, and it's only gotten worse. Though I don't have many qualms about the broader effects of my delayed start at one job and delayed resignation from another (it's unlikely that my department would be able to replace me immediately, so I'm not "keeping" a position from a needy job-seeker) I don't have none; the security that allows me to try on a new job risk-free is exactly what's unavailable to most academics today.
However, it's that broader lack of security that makes those of us who have it cling to it. Jobs are so scarce that any screw-up, whether personal or institutional, can have devastating consequences, and no one is immune. These days it's not uncommon for junior faculty in very prestigious positions to have had only that one offer, after years on the market, and to have been a minute away from leaving the profession. Even extremely talented people who get denied tenure often can't find another job, and those who leave the tenure track can rarely get back on it.
I'm thankful that both institutions have been flexible enough to let me make a decision I'm comfortable with, in a way I'm comfortable with, and no larger good would be served by my hastening to closure. But the security from which I make that decision is a privilege. I wish there were more of it to go around.
*Since you asked: the Romantic poetics are goddamn whiny, navel-gazing tree-huggers! (Except Byron; Byron's all right.)