She got to her feet and waved to the audience to with a reassuring smile.
However, Tyce failed to properly grasp Mary and she dropped to the stage, much to the judges' and audience's horror.
America's Got Talent is full of exhilarating, daredevil-style stunts, which usually end with the audience being left in awe of how the acts managed to pull them off.
The camera then cuts to the couple's distressed two-year-old son, who was being held by Mary's mother.
The couple progressed to the next round, with the judges recognising their skill, despite the fumble in their act. As all this unfolded, Tyce watched from the air as his wife was injured until he could be brought to the ground safely.
The couple wanted to attempt the stunt again, but the judges would not allow it.
Guest host Ken Jeong also reassured them, saying, "This is not 'America's Got Perfection.' It's 'America's Got Talent.' Nobody can do this. I mean, it's okay".
"I don't think there's ever been a singer on any of our competitions who's been note-perfect", he explained.
The embarrassed couple asked if they could do a repeat performance to make up for their slip-up. "It doesn't make them not wonderful, it makes them human".
In fact, once Tyce joined her down on the stage - by jumping from his own trapeze bar - she offered to get back up there with him for do-over. "It makes them human", he said, adding that the "consequences on this are slightly worse than falling off key, whereas you almost broke your neck". "It's 'America's Got Talent.' Nobody can do this".
Later in the night the judges made the easy call to advance Duo Transcend to the live shows, meaning "AGT" fans will soon see their journey continue at the Dolby Theatre in Hollywood.