My original plan (up until about a month ago) was to stick it out for another year and pad our buffer. That changed after I was given different responsibilities (primarily managing personnel in an awkward situation) and was working a lot at odd hours which disrupted seeing my family.
The new scenario will have me (at least theoretically) working fewer hours and working during normal business hours. In addition, my responsibilities will go back to what they originally were. When you add in the extra $, it felt like I just couldn't pass up the deal. I'm viewing this like I switched back to the original plan of padding our buffer at an accelerated rate for a few months.
If things go well and I enjoy the w*rk then I may consider continuing the deal a little longer, but I doubt I'd go much past this summer in any case. If things don't go well then I can simply head back to ER. It's good either way