Troy Buswell has broken his two-month media silence, revealing he is now "back on deck full-time" as member for Vasse.
Mr Buswell said he had no aspirations to return to the Barnett ministry.
In a series of interviews with the Busselton Dunsborough Times, Mr Buswell expressed gratitude for support during "a difficult time".
He criticised his own Government's security protocols over last week's suspicious packages scare.
But he would not discuss the circumstances surrounding his leave of absence.
Mr Buswell has been absent from the media since crashing his car into his Subiaco gate after a wedding on February 23 and having a mental breakdown.
He faces 11 traffic offences arising from that night, which are listed for hearing in Perth Magistrate's Court today.
Mr Buswell, who resigned as treasurer and transport minister two weeks after the crash, told the newspaper he was looking forward to putting his ministerial experience to good use by arguing for local infrastructure and services.
"I've spent a lot of time in the ministry and treasury and it gives you an insight into how it works," he said.
"I'm looking forward to having more time to re-engage with the local community.
"Life as a minister was very busy and the demand on my time across the State was substantial.
"The role as a backbencher is different. I'm looking forward to attending more Busselton Magpies footy games."
Mr Buswell, whose approved leave from Parliament expires next Tuesday, said the support he had received "reminded me why we're so blessed to live in the community we live in".
But he criticised the Department of Premier and Cabinet, which until recently ran his ministerial office, for having no suspicious package protocols when flour-filled envelopes were sent to his and other electorate offices.
"(The department) have a duty of care to my staff and staff in all 90 electorate offices and they breached that duty of care," Mr Buswell said.
He also complained no one at WA Police's dignitary protection unit answered the phone or responded to his message when the envelope arrived.
After working part-time before Easter, he said he was now back full-time with "a full in-tray and plenty to do".