Carol, congratulations... I was there too

That's a tough one; would the new occupants be willing to let you remove them in December? You might have to build a sturdy little fence to protect them from kids, dogs, mowers... I've got a newly grafted apple tree too, it's still pretty small. I'm sure I could remove it today, if I had to. I'd just dig as far out as I thought I could handle the root-ball; the soil generally falls away if not connected. Have a very large pot ready, keep it out of direct sun for a few days and water it good... Whatever happens, I'd bet it would merely stop it progression of growth for this year, and it would take off again next Spring!