If it's burr knots and you bury it, they should develop a nice root system that will hopefully help anchor the tree and help keep it from falling over in the future.
My hypothesis is that these burr knots form for a reason, maybe when the tree senses that it needs to send down additional roots for some reason, which may be what the other tree was doing before it fell. Just guesses though.
Hope your tree makes it Artie!
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