He's not 'in sympathy with' the other members of the group. = He's 'out of sympathy with' the other members.
He seems to be 'in sympathy with' our views. [=to agree with and support our views]
She has/feels a deep 'sympathy for' the families of the victims.
(..) to pull the plug. - Last word. - What? I can't lie to you about your chances, but... you have my sympathies. We're gonna blow up the ship. We'll take our chances in the shuttle. - Blow up the ship. (..)1979 Alien