We had a seperation of employment because it was not a good fit. What I am most excited about is that going forward I have developed a number of skills clincally. I have a broad understanding of multidisciplinary plans of care. (and whatever else you can add that is a reflection of going forward).
IF they ASK and ONLY if they ask you why it is you were not a good fit, I would say something along the lines of "I try to reflect the mission statement of the facility in my nursing practice" or some other patient advocacy, the management style and culture of the unit was not in tune with your practice.....some other such thing, then again. "Moving forward I would like to get a certification in......."
Good luck and let us know how it goes!