Refs should ,of course, be neutral but we can't presume they are, and today's display by him and his dislike for latics in the past should surely be looked at by his superiors.
Here is some internet info proving refs allegences...
Mark Clattenburg: The former Premier League referee acknowledged that he struggled with personal aversions to certain teams, stating that he "hated Burnley and they hated me," which affected how comfortable and confident he felt officiating at their stadium. He also noted pressure surrounding big-club managers like Alex Ferguson at Manchester United.
Club Allegiance Declarations: Active Premier League officials, such as Michael Oliver (who supports Newcastle United), are required to formally declare team allegiances and family connections to PGMOL so they are barred from refereeing matches involving those clubs or direct rivals (such as Sunderland or relegation competitors).
Scrutiny on Past Officials: Retired referees like Mike Dean have publicly spoken about the internal dynamics, pressures, and conversational realities of matchdays, sparking debate among former colleagues like Graham Scott regarding how those comments reflect on official neutrality.

Apparently, a club cannot request or veto a certain ref but I think while we are appealing the 2 red cards from today, we should present the authorities with statistics from latics games he has reffed, and hope we don't get him again .