Could you give me a link to the posts on FIRST forums? I couldn't get anywhere searching "CAN", "Jaguar" or "untrusted". Thanks! Also, keep in mind, only one Black Jaguar would be necessary per robot to act as a Gateway to last year's CAN enabled TAN Jaguars. Digikey currently has 780 Black Jaguars (MDL-BDC24) in stock.
One more quick observation - the Black Jaguar CAN gateway makes the 2CAN Ethernet to CAN converter a more expensive solution than just purchasing a DB-9 female to RJ-11 adapter (
http://www.trianglecables.com/modular-adapters.html) and using the serial ports to run/monitor the motor controllers.