According to this article at News.com some of the terms of the Ralph Yarro-SCO settlement includes Canopy handing over their SCO shares to Yarro.
Why he'd actually want them is anybodys guess, but it might seem as a face saving measure for both parties: Yarro gets to say he got something substantial, Canopy gets to get rid of a troublesome legal case.
Groklaw also covers this here.