I think what is missing overall, is a baseline understanding of RT and what "normal" actions are for him. Maybe he is a bit on the vain side and wants his hair to look all spiffy if he is interviewed again. Maybe he is scared spitless and having his hair spiffy makes him feel a little better.
Or, he could be like a lot of men I have observed who have lost their wives....they panic. They just don't know how to be on their own. Maybe he is already on the hunt for a replacement for his beautiful wife. Does being "in the hunt" make him guilty of anything other than being an insensitive *advertiser censored*s? No, not necessarily. Some narcissistic people (if he *is* one, IDK), see people as quickly replaceable. Guilty, not necessarily - insensitive, you decide.
None of the above, IMO, means anything other than it speaks to a fixation with his hair, and looks. It's a common thing. What makes it uncommon is that his wife is missing, but that doesn't mean he hasn't always been fixated on his "golden" surfer boy locks.
Amateur opinion and speculation