Woods claimed the firing was triggered by a previous tweet he posted in June that was critical of the Diamondbacks' performance on the field. The team happens to be a top client of his former employer, according to reports.
He also accused D-backs owner Ken Kendrick of sending him a "threatening" email in response to his June tweet, which had urged Kendrick to sell the team "to someone who cares."
"So when @azcentral printed my critical tweet of the awful Dbacks owner, Kendrick sent me this threatening email, copying my law firm," Woods wrote Thursday. "They caved in minutes. I’m happier on my own and, to be clear, he is a very poor owner and person. I will call them as I see them."
Woods included a copy of Kendrick's email in his tweet in which Kendrick allegedly wrote that he had read Woods’ disparaging June tweet and called Woods an "arrogant a-----e."
Kendrick continued, "It is sad that [Gallagher & Kennedy], a quality law firm, has employed you. I suggest that if our paths ever cross, which I hope they won't, you should expect a very unfortunate outcome. P.S. I suspect if my dear friend Mike Kennedy were still with us, he would kick you out of the firm."
Gallagher & Kennedy has represented the Diamondbacks as general outside counsel since 1995, according to The Athletic. Woods said he never represented the team personally.
Kendrick sent copies of his email to Woods to the law firm’s managing partner Dean Short and board member Tim Brown, according to The Athletic.
‘Insult to fans’
On June 17, Woods had tweeted that the team had set the record for most consecutive road losses in the history of baseball.
"In Spring Training, we said this team is non competitive and an insult to fans. [Ken Kendrick] needs to sell the team to someone who cares. Or don’t expect us to care."
The Republic later printed the tweet in its sports section.
Woods said he thinks the "unfortunate outcome" line in Kendrick's email represents "threatening and intimidating" language, which would be a misdemeanor in Arizona, according to Bleacher Report.
Criminal defense attorney Aaron M. Black told Bleacher Report that Kendrick may have simply been referring to filing a lawsuit.
"There's nothing there that specifically says that it's an injury," he said.
Gallagher & Kennedy did not immediately respond to Fox News’ after-hours request for comment.
In a statement to The Athletic, Short said, "The tweet by Grant Woods disparaging one of the firm’s most valued clients was the catalyst for Grant’s dismissal from the firm. Ken Kendrick’s reaction to the tweet had no bearing on the decision to terminate Grant. Further, at no time did Mr. Kendrick or anyone else at the Diamondbacks request, or even suggest, to me or anyone else at Gallagher & Kennedy that Grant be terminated."
The Diamondbacks did not immediately respond to Fox News’ request for comment but a representative for Kendrick told the Athletic he declined to comment.
Since Kendrick became the Diamondbacks' managing general partner in 2004, the team has had six winning seasons, according to Bleacher Report.
Woods, 67, left the Republican Party in 2018, claiming he had become frustrated with divisive rhetoric from the GOP and then-President Donald Trump, radio station KTAR-FM of Phoenix reported at the time.
He is also a former chief of staff to former U.S. Sen. John McCain, who died in August 2018.