I heard it - he wasn't really expecting to be on the spot like that and made a fairly good hash at responding considering he wasn't a professional PR man.
As he pointed out albeit in a roundabout way women in the clergy is contentious in many religions - no female Anglican bishops, no RC Bishops at all.
As for discrimination, well many churches have history they're not proud of! it's not actually surprising given the history of segregation in America as the source of mormonism - I doubt the interviewee was even born in 1974!
I suspect the BBC was trying to get away from the predictable 'you have many wives' mormon questions and treat them as seriously as any other religion whilst still putting some tough questions later on regarding secrecy.
Personally I'd've been more likely to ask questions about all that rot in the book of mormon about lost tribes of Israel running about in America and Jesus going there for a visit after the crucifixion
If you've never looked at the book of mormon trust me, it's a scream!