Hi there,
my name is kristina and I am from california. Both my boys have this and so does my mother in law. I have always been told that one of the things about von whilderbrans is that your platlets will work fairly normal sometimes and not normal others. With my kids I have always just taken the extra procautions when needed since you don't know when they are working or not. The same thing with my mother in law. Any time she has had a surgery they have a hemotologist there and they consult with him pre-operatively and sometimes there is medications to take before or after surgery to help increase the effectiveness of the platlets.
One of the things that has always bothered me is that they believe that there is a factor in my mother in laws blood (possibly what caused the von whilderbrans) and that my father in law must have the same gene just resesive or something like this which caused my husband to be born with an even more rare and devistating blood dissorder. Hwas born with glanzmans thrombasthenia which only about 18 or so people have in the us and canada and with this disorder his platlets are there, just on average 97% don't work. We have been told that this is one of the things to be concerned about in the future with our children and there future partners (that they could have a child with the same problem as my husband).
My best guess is that your problem didn't actually go away, but that your platlet function has just been more functional. I would definately contact a hemotologist to know more specificly. But I have always been told this is a life long deal, not something you can just get over.
Sorry if this isn't exactly what you hoped for.
Good luck