Demonstrating my hammerlock on the obvious: stuff that's dependent on Snow Leopard is not viable, nor is core software that's no longer maintained by the vendor. Apple isn't particularly known for offering AppleCare past three years, hardware parts past five or seven years, and maintaining software more than one OS X release back.
Escalate this to your manager, and encourage your management chain sort this out. (These are the decisions that management gets paid to make, after all.)
Whether that's operating as a guest in VM as an interim measure pending an application migration (with trackpad issues or not), or acquiring older Mac systems as an interim measure, or the eventual platform migration....
The trackpad behavior might be an issue with the VM; certainly worth a question to those folks.
I managed to install OS X 10.6.8 on my MacBook Pro Retina by booting it in Target Disk Mode from my MacPro desk top model and installing from there. It will boot as an external drive and run my Mac Pro, But will not boot on its own and run the MBP Retina. So this just proves that the hardware in the MBP Retina is not suitable for the Snow Leapard OsX.
This is really frustrating for me too as I have a Avid Mbox 2 audio interface that will only run in OsX before Lion and Avid are really dragging there heals in updating the Drivers for the Mbox 2 rto work in Mountain Lion. I want to use my MBPR for mobile recording and I don't want to have to buy a new Audio Interface. It would help if Avid were to give a release date but they haven't yet. Does anyone know if the Mbox will work with VM ware on the MBPR?
I also would like to run Snow on one of the new Macbooks, because I don't like Lion or Mountain Lion, and because most audio manufacturers are slow to upgrade drivers for new Mac operating systems. To have my audio setup in Snow with a quad-core would be nice. I run Logic 9 in Snow thru an M-Audio Firewire Solo. A Hackintosh is another possibility to run my audio setup in a quad-core but stability issues might become a plague. Other users are right to point out vitrual solutions; however, these are rarely acceptable to audio needs.