Williams finished the game without a catch and was targeted only once.
When asked if the Cowboys called any plays for him, he told ESPNDallas.com, "No. Hell no."
Williams has endured a subpar season in which he caught just 38 passes for 596 yards and seven touchdowns. He had four games with one catch and two in which he was shut out.
Once the postseason began, Williams was hoping he would be more involved in the offense.
In the NFC wild card win against the Philadelphia Eagles, he had five catches for 59 yards and no touchdowns. Williams dismissed the production, saying the Eagles' frequent blitzes were the reason he was targeted.
Against the Vikings, Tony Romo's only throw to Williams came on a first-down play in the first quarter. Romo was under pressure and got knocked down on the play.
"I didn't get a ball today, and I didn't get a look at today. It just happens," Williams said. "It's frustrating. It pisses me off, especially when we lose and especially when I feel like I have a mismatch. I got a 5-10 corner [covering me, Antoine Winfield], but hey, you know, I will continue to work hard in the offseason and it will come back around."
Williams said he was surprised at the way his season unfolded.
The Cowboys traded three draft picks to the Detroit Lions last year for Williams and signed him to a six-year, $45 million extension. He caught only 19 passes in 10 games lining up opposite Terrell Owens.
The Cowboys still owe Williams $21 million guaranteed, including more than $9 million in 2010 even if he's not on the roster. Williams said a few weeks ago he doesn't expect to get released after just his second season with the club.
"Now, next year," he said in late December, "if this is the same thing going on, then I'll be like, 'Oh [expletive], I've got to get my [expletive] together.' But right now, no. It's play ball. I'm good."
Williams was supposed to be the No. 1 wideout on this team, but Miles Austin surpassed him as a target Romo trusts. Patrick Crayton, the No. 3 receiver, finished with more receiving yards (622) than Williams. Jason Witten, the veteran tight end, led the team in catches (94) and was second in yards (1,030) this year.
Cowboys owner/general manager Jerry Jones said pressure on Romo prevented him from getting the ball to receivers when they were open Sunday.
"It was tough on us," Williams said. "Talking to [Vikings defensive tackle] Kevin Williams after the game, he knew we were a hot football team and they wanted to get after us and that's what they did. They had a lot of pressure, more than usual. We just couldn't make the plays."
The Vikings changed around their coverages from man-to-man to zone and got constant pressure on Romo. Of his 22 completions, only six went to wide receivers, one in the second half.
"They mixed it up, it didn't matter to me, I didn't get the ball," Williams said. "I didn't get looked at. I was just out there."