Tampa Woman, Estranged Husband In 'Amazing Race' Finale

Tampa businesswoman Tina Greene and her estranged husband, Ken, managed to survive another leg of CBS' "The Amazing Race" Sunday night and will be among the final three teams going for the $1 million prize next week.

Eliminated on the episode were mother and son team Toni and Dallas Imbimbo of Woodside, Ca.

They fell behind after Dallas lost their money and passports when he left a travel bag in a cab. They had to beg from strangers and travel by subway.

The brother and sister team of Nick and Starr Spangler, who seem to have charmed lives, sailed through all the challenges with ease and were the first to arrive at the pit stop.

Also still in the running are the often hapless and clueless fraternity buddies from Arizona State University, Andrew Lappitt and Dan Honigh. They overcame a road block (learning a traditional Russian dance) and getting lost to come in second on this leg.

The Greenes, who are using the race as a test to see if they can patch up their strained relationship, appeared to be on edge and bickering under the pressure of the competition.

The challenges involved traversing Moscow in cabs, trolleys and trains to complete chores at various landmarks including a retired nuclear submarine, a graveyard for old monuments, the home of a Russian author and a kids' park.

At one point, Tina snapped at Ken over sharing a parka with a hood. He appeared to resent her strident attitude and constant reminders to "calm down." He also was miffed when she helped Dallas Imbimbo with a challenge (before he lost the bag).

Ken said she does things her way, "puts up a wall and doesn't listen." She said he was not giving her any positive reinforcement.

The Greenes almost got derailed at the close of the race when they had trouble finding the last clue. At the close of the show, Tina and Ken were shown saying that they had to pull together to win. "How important is the relationship and how important am I to him?" she asked.