Ignore a role

Hi, I want a role to be ignored when the Front Page module checks for a front page option. See this example why:

I have 3 roles: Ordinary User, Admin User and Post tickets. My Users can be an Ordinary User or an Admin User. Both of them have different front pages. All users may have the role Post tickets. Unfortunately Post tickets has the highest role weight which let Front Page assign the front page setting for the Post tickets to the user. If I just can set the Post tickets role to be ignored by Front Page all will be fine.