I think most people that use the T brackets and mount the Q's flat against the wall use a bare wire connection. I would think shortening the T bracket would be fine as long as it still supports the speakers to the wall.

Maybe some other Banana gurus will chime in soon.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85