Fullscreen 2nd Display on OSX (NBA League Pass streaming)

When using NBA's League Pass service you can stream live and pre-recorded games. It uses Flash to do this and has a full screen option. Howver, when I full screen it on my 2nd display, and then click on something else on the main display, the video goes back to windowed mode.

The strange thing about this is I can get it to stay full screen sometimes. It seems completely random and there is no fool-proof method to make it do it every time. I did a bunch of reading through Google and found out that this functionality is supposed to be possible since version 10.3 with Flash Player.

Is there a way to make it do this every time? I found some information for Windows users where they can edit a DLL file using a hex editor and it will make it work properly, consistently. Is there anything like that which I can do for OSX?

Using 11.1.102.55 (latest as of 12/30/11 for Mac)