I know two people who got washed out of pilot training. One was a washout because he couldn't land the plane well, the other self eliminated because he was getting sick every flight and didn't want to waste any more time in it. Both got kicked out after trying to reclass, the SIE handed a bill for 140k and some change. He got his congressman involved, though, and I don't think he has had to pay anything back. This all happened in 2010, and they warned us starting with my class that it was likely to happen to anyone who quit.
Seems like an expensive way to reduce officer numbers: pay for 4 years of school and training, then IFS then walk. Got to be a better way to screen potential candidates from the academy. Isn't this why they stood up the powered flight program and bought a bunch of new planes, to help reduce washouts?