I Believe My Own Eyes from Tommy

It's a beautiful song, but I was a bit confused when I recently attended a regional production of Tommy. I thought the song was about Tommy's parents coming together to reclaim their lives after deciding to institutionalize their son. Yet in the production I saw, Captain Walker storms out of the room at the end of the song leaving Mrs. Walker in tears. Was this a strange choice of direction, or have I misinterpreted the song all along? Thanks in advance.

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Could they have interpretated it as frustration with Tommy. Saw this set last night for our production of Tommy and Capt W. does not storm out of ours!