Would you distance yourself from it, on the grounds that it provides an opportunity for your estranged brother to take a poke at you?
Carry on, grey rocking the antics from Montecito?
Something else I can't think of?
(And before anyone rocks up to tell me to get a life, find something to do, take up a hobby - I'm having a quiet day today where I'll do what I fancy, so go take your own advice.)