"Obviously that's a big break in the game for us," Houston coach Gary Kubiak said. "But I think you make your breaks when you work your tail off."
Detroit kicker Jason Hanson had a chance to get Schwartz off the hook, but his 47-yard field goal attempt on the fifth possession of the extra period hit the right upright.
Detroit might've won in regulation if its coach didn't make a costly mistake.
"Give him credit for continuing to play football," Kubiak said. "We talk about that all the time. You don't stop, you play."
Replays showed Forsett's left knee and elbow hit the turf near midfield, and the automatic review that accompanies all scoring plays probably would have taken the TD off the board. But NFL rules say that throwing the challenge flag on a scoring play negates the review -- and is an unsportsmanlike conduct penalty to boot.
"It's on me," Schwartz could be seen saying to assistants and players on the sideline as he tapped his chest. "It's on me."
Yes, it was.
Forsett even acknowledged he shouldn't have allowed to score.
"I know now that I was down, but I didn't think I was during the play," he said. "I didn't think my knee hit, and there was no whistle, so I kept going.
"I wasn't giving the touchdown back."
That score pulled Houston within three points.
"I knew the rule -- you can't challenge on a turnover or a scoring play -- but I was so mad that I overreacted," said Schwartz, whose temper got the best of him during a postgame handshake last year with San Francisco coach Jim Harbaugh. "I had the flag in my hand before he even scored because he was obviously down."
Kubiak had no sympathy.
"A rule's a rule," Kubiak said. "I know one thing: You've got to keep your flag tucked in your pocket."
Arian Foster ran for 102 yards and two scores, including a 1-yard run with 1:55 left in the fourth quarter to cap a 15-play, 97-yard drive that tied the game at 31.
The Texans have won five straight -- two in a row in OT -- and if a handful of teams lose they could be in the playoffs by the time they get back on the practice field after a long weekend.
Detroit (4-7) has lost three consecutive games to make it extremely difficult to reach its goal of earning a spot in consecutive postseasons for the first time since the mid-1990s.
"I really don't have anything to say about that play or that person," Schaub said.
Suh was on his chest, taken down by an offensive lineman, when he extended his left foot below Schaub's belt.
It wasn't clear on replays whether the kick was intentional, but Suh might struggle to get the benefit of doubt and perhaps that's why he didn't stick around long enough to talk to reporters after the game.
Last year on Thanksgiving, Suh was ejected for stomping on the right arm of Green Bay offensive lineman Evan Dietrich-Smith and was suspended for two games. He has been fined in previous seasons for roughing up quarterbacks: Cincinnati's Andy Dalton, Chicago's Jay Cutler and Cleveland's Jake Delhomme.
Schaub shook off the blow, stayed in the game, and was 29 of 48 for 315 yards with a 9-yard TD to Owen Daniels to tie the game at 14 late in the first half and an interception.
Detroit scored four go-ahead TDs, including on Joique Bell's 23-yard run early in the fourth quarter, and had a 10-point lead midway through the third quarter.
The Lions drove deep enough into Houston territory in the fourth to put Hanson in a position to give them another 10-point lead, but Watt forced them to punt each time with sacks on third downs.
Those accomplishments along with providing entertainment for the nationally televised audience for a change on Thanksgiving was of little consolation for the franchise.
Detroit extended the longest losing streak in its annual showcase to nine in a closely contested matchup that will linger in the minds of many people, especially Vanden Bosch, one of many Lions who could've changed the outcome by picking off a pass that hit his hands in a wild OT.
"It's going to be really tough to forget that one," Vanden Bosch said.
Copyright 2012 by The Associated Press