Rules Analysis
World Flying Disc Federation 2017 Rules of Ultimate
7. The Pull

If the disc contacts the out-of-bounds area without first touching the playing field or an offensive player, the thrower may establish the pivot either at the brick mark closest to their defending end zone, or at the spot on the central zone closest to where the disc went out-of-bounds (Section 11.7).  The binding brick option must be signalled before the disc is picked up, by any offensive player fully extending one arm overhead and calling "brick".

If an offensive player signals and calls “brick”, a different offensive player may pick up the disc.

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