Original sentence: He would accompany his fellow Flock members to ringside carrying a variety of signs, which he would display to the audience at intervals (a gimmick borrowed from ECW's Sign Guy Dudley)
Edited sentence: He would accompany his fellow Flock members to ringside carrying a variety of signs, which he would display to the audience at intervals (a gimmick they (WCW) stole from ECW's Sign Guy Dudley)