Purcell said by phone Monday morning that he did not order the dogs shot and that Seidl's claims about that and the police vehicle are unfounded.
According to Purcell, Seidl admitted to Deputy Mayor Lance Wilson that Seidl just wanted to get the mayor in trouble.
As for the dogs, Seidl "decided to do it on his own," Purcell said.
Deputy Mayor Wilson supported Purcell on that claim Monday, saying that Seidl and Animal Control Officer Dennis Lords acted on their own in shooting the animals.
"There was absolutely no reason those dogs had to be shot last Tuesday," Wilson said. "This was completely unnecessary."
Weeks earlier, Wilson said, Lords had told the City Council that the cost of euthanasia had increased. Later, the city's deputy clerk contacted the veterinary clinics Lords had used to see what they had charged, Wilson said.
They discovered that the true cost of euthanasia was much less than what Lords had claimed, mostly because the veterinarians involved had donated their time. And Lords had been including things like wear and tear on his vehicle and his pay in the total charges, Wilson said.
"We had no reason to question what he was telling us, and now we find out it was contrived information he was giving us," Wilson said.
Wilson said Purcell did order Sgt. Seidl, whose department oversees Animal Control, and Lords to do their jobs -- namely, to either adopt out the animals that were past their waiting period or euthanize them -- but Purcell never gave an order specifically saying the animals should be shot, Wilson said.
Additionally, Purcell told Channel 2 News that he did not impersonate a police officer, that Seidl's video was spliced together, and that the date on the video -- May 6, 2010 -- is questionable.
The dashboard camera video does not show Purcell's face, but it does show a woman Seidl claims is Purcell's wife.
Purcell declined to talk further about the video, saying that a city attorney is reviewing all of the information involved in the recent allegations.
The special City Council meeting is 6:30 p.m. at Houston City Hall.
Contact Channel 2 News at news_desk@ktuu.com
This is a developing story. Return to KTUU.com as more details become available, and watch the Channel 2 News evening broadcasts for a full report.
