Surprises me that Opus Dei would be falling over themselves to apologize for alleged "insensitivity" towards Islam. From what I know about the organization, its a staunchly orthodox, hard-corps Catholic organization, and one that would (or should, apparently) have no qualms about standing up to the bullying nature of Islamo-terrorists.
Dante had some quite prominent Christians in his Purgatory as well.
But I guess only Muslims can be offended by art.