WR for dropping down in age groups for national record relay?

They cheated! This Canadian 4-by-100 team got a ringer for the relay. IAAF Best Masters Athlete Christa Bortignon of British Columbia, 78, dropped down to the W60 age group to help the Greyhounds Masters Track Club set a national record. Competing on April 26 at Oregon’s famed Hayward Field in Eugene, the team of Deborah Lee, Christa, Urith Hayley and Elaine Whidden clocked a 1:03.74. This breaks the listed Canadian W60 record of 1:04.60 by Team Canada at 2011 Sacramento worlds. (The listed WR is 55.77 by Germany.) Their coach is the famed masters long sprinter/hurdler Harold Morioka. So can anyone beat Christa for dropping down three age groups?