Williams returned to practice Monday, but he said he likely will have to deal with the injury -- plantar fasciitis -- all season.
"It's a situation where I don't think it's going to go away until maybe the offseason," Williams said. "We're just going to deal with it and try and grin and bear it."
That is, of course, if Williams isn't suspended for the game stemming from a positive test for a banned stimulant three years ago. Williams lost a court battle with the NFL over the test, but he has yet to be notified if he will be eligible to play when the season begins.
Williams said he felt a little better while running around during a light practice Monday.
"I ran pretty good," Williams said. "It wasn't real physical. It was a lot of hand work and running. It wasn't too bad. I needed to run."
"He moved around fairly well," Frazier said. "Much better than I anticipated."
Frazier said Brinkley was sent to a specialist to examine his hip flexor, and the team moved defensive end Everson Griffen to linebacker for some drills to try to address the lack of depth. Griffen is in his second year out of USC, and Frazier said the Vikings like his chances for making the transition to give them some much-needed flexibility.
"He's just a tremendous athlete with good football intelligence," Frazier said. "He has some playmaking abilities, so we want to utilize his athletic ability."
Notes: Frazier said on Monday that rookie quarterback Christian Ponder will start Thursday's game against Houston, with Joe Webb likely playing the second half as the two battle for the backup job behind starter Donovan McNabb, who will not play in the preseason finale. ... Former Vikings offensive lineman Bryant McKinnie announced Monday that he has decided to donate the furniture and appliances from his Eden Prairie home to a local charity. McKinnie was released early in training camp after reporting overweight, and was signed last week by the Baltimore Ravens.
The Associated Press contributed to this report.