I thought you'd find the slides from a talk given at SCOforum 2004 of interest, because they show that SCO also distributed, under the GPL, binutils in UnixWare and OpenServer. The talk was titled, "Open Source Components in SCO OpenServer and SCO UnixWare", and the credits list Ron Record at SCO engineering. It lists the binutils package in OpenServer as OpenServer gnutools package, which means they had to know, I think, where it came from and that it is GPL'd, and there is a list of ftp sites to get the package. I made screenshots at the time, and I note that the talk's slides are still listed on Google as being available here on SCO's website.