I found a nifty program that can be run from the command prompt to correct this error in IE9. Be aware however, as stated on the publishers download page:
Changing the embedding value does not give you license to distribute the fonts. You should only change this setting if you are the font creator, or something like that. Use at your own risk.
You need a 32 bit windows box (i.e. fossil) to run the program. I have access to one. I can do it for you if you want to try it.
You should contact p22 and ask them how to solve the permission issues.