Anglin is the MLA for Rimbey-Rocky Mountain House-Sundre.
His resignation from caucus comes after the PC Party swept four recent byelections, despite suggestions voters were tired of the party and could turn to the Wildrose.
Anglin wrote a lengthy explanation on his Facebook page of his decision to quit the caucus, saying the party has been detracted from its original mission by internal fighting between "ideologues and pragmatists."
"This party was founded on the principles of a grassroots democracy. It is now infested with an unelected backroom weed that is choking off the grassroots movement," he wrote.
Anglin says Wildrose Leader Danielle Smith was set to put forward a motion on Sunday to have Anglin kicked out of the caucus.
He says he feels the party mismanaged his nomination process last June as well as the recent byelections, and that something needs to change.
While expressing his respect for Smith as a person, Anglin said he does not respect the people advising her and wants to see the party address its problems.
Read Anglin's full statement below.
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