I really don't think it's as black and white as that, IMO.
It's easy for us to judge when we're stood on the periphery looking in. It's easy to cast aspersions in relation to a scenario that none of us will likely (hopefully) ever face in our lifetimes, and it's easy to make assumptions about things we, in reality, know nothing about.
But we do judge. We all do. It's human nature to do so, and it's hard not to in extremely emotive cases such as this one.
Just as an example about it not being black and white: I only have my mum. Literally no one else. So I ask myself what I would do if the situation was reversed and my mum had committed a crime and I knew where she was. Would I turn her in?
There's absolutely no way, because she's all I have.
Is that a selfish decision? Maybe.
Is it simply down to the fact that I would do anything to protect her, and I, rightly or wrongly so, value her life above others? Maybe so.
There are many factors that can influence a decision.
How many times have you heard someone say, "I'd give my life for my child", or, "I'd die for my family"? When you think of those statements which are as 'ultimate' as a statement can be in terms of sacrifice, what the Laundries are doing for Brian might not seem too inhuman after all.
I'm angry at how they're behaving, but that surely makes me a hypocrite when I wouldn't turn my mum in if she was wanted by the police.
JMO