Big Reversals -- and Even Bigger Betrayals -- on 'The Biggest Loser' (VIDEO)

Sometimes, the experience of watching a reality show is so frustrating that you feel like pounding your fist on the TV screen. "No!" you want to shout. "What? Why?" Tonight's 'Biggest Loser' (Tue., 8PM ET on ABC) really brought out these feelings of annoyance.

[Warning: Spoiler alert.]

Last week's episode came down to a battle of youth vs. age. The two players up for elimination were 58-year-old Tina Elliott and 22-year-old Allie. Tina gave an impassioned speech, telling the other players that this was her last chance to ever lose weight. She begged to be kept on the show, while shedding copious amounts of tears.

The speech worked, and Allie was kicked off. But tonight, Tina totally reversed herself -- and also did a little more crying.

Right after Allie's elimination, Tina suddenly decided she couldn't handle being on the show anymore. So she did another speech, with even more tears. After saying that she would "never ever forgive" herself, Tina made the following statement: "I'm going to ask to go home today." No! What? Why? ... Tina kept on crying, while the other players in the room gave her horrified and angry glares. They had kicked off Allie for this?

"For her just to quit like that, it's just garbage, man,' said rival Brendan Donovan. (It's even better when you hear it in his heavy Boston accent: "Gah-baaage, man.") But just when you thought things couldn't get any worse, they did. Following a talking-to from trainer Bob Harper, Tina reversed herself again! Suddenly, she wanted to stay on the show. Make up your mind, Tina!

In the end, Tina was put up for elimination -- for the second week in a row. She needed the votes of her fellow 'Losers' to survive. But would they be able to forgive her multiple betrayals?