Although this is my first season of 'cross, I too, have the dreaded stutter step on the remount. Adam and another of his coaches are local and coach our women's team, and they can't help me either. Everyone has said that it is a commitment issue....
The way I currently look at this is that at least with the stutter step my bike is in forward motion when I remount. When I don't do this, I basically come to a complete stop to get back on my bike.
The funny thing is, that I have practiced and practiced. In slow-mo, I don't have a problem. Come race day, however, all bets are off.
Sorry not to help, but wanted to comiserate...
SheFly