interesting, i just went and looked up the expansion draft... .jets had 3 players drafted and could have removed players after each 1 was taken... they chose to allow these players to leave essentially.
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Each NFL team listed five players that the Texans could select,[6][7][8] and the Texans were required to claim either 30 players[6][7][8] or $27.2 million in contracts (38% of the 2002 salary cap).[7][8][12] After the Texans selected a player from an existing team, that team could remove a player from their remaining list.[7][8][12] If a second player was taken, the existing team could then pull back its remaining players.[7][8][12] However, teams were not required to remove players from the draftable list, resulting in three Jets and three Jaguars being drafted to the Texans. The Texans were prohibited from selecting a player from a team and trading the player back to that club.[12]