Menchhofer-
Depending on where you are at here in the state (I assume somewhat close to Indy), I know of a few companies that have large spades. Whether they are large enough for a 10" crab is unknown.
If you are close enough to Indy, call a company called Tree Movers (it may be Indy Tree Movers, I'm not sure), the owner is named Larry. They have some larger Vermeer spades on large chassis. Don't expect cheap though, 2 years ago, if my information and reccollection is correct, he was charging $300/hour to move trees from a nursery near Seymour to a site near Zionsville.
If you are to the west of Indy, I can give you the name of someone else.
Your biggest problem will be finding a tree that large.
We usually charge somewhere between $300-$500 for a 1 1/2"-2" tree, installed, depending on the size of the tree and the site (and anymore, how much bullsh*t we have to put up with from the client!).
HTH.
Dan