By FOX Sports staff
In an statement on their official website, BEC Tero confirmed the 47-year-old has been removed with immediate effect.
Although the decision seems a peculiar one given the Fire Dragons have enjoyed a relatively bright start to the 2013 campaign, lying fifth on the table with 14 points from their first seven games, the club revealed it was a difference in opinion over playing styles that led to his dismissal.
Robert Procurer, the club's technical director, also admitted their performances so far have been satisfactory but was concerned they were not headed in the direction the board was looking for.
"Parting with Stephane was in the best interests of both parties," he said.
"The form in the last few games have not been satisfactory and the club believes it was time for a change, in order to move forward in the right direction.
"We have the resources and the best players, who have undoubted quality, and we believe they can reach their full potential with the right guidance."
Procureur, who previously held the same role with fellow Thai giants Muangthong United and Myanmar outfits Yotha and Yadanarbon, also revealed one of the factors that played on their decision was the fact they will play a number of crunch clashes in the coming weeks.
"We needed to change things as soon as possible because we have many big games coming up," the Belgian added. "This decision was reached after careful consideration from all the people involved with the club.
"We will look at three to four options that are available before an announcement will be made regarding the club's new coach."
BEC Tero have only lost one game so far in the league this season and are the competition's joint-third highest scorers with 13 goals.
Demol was capped 38 times for Belgium throughout a career that saw him ply his trade with a host of European sides, including Bologna, Porto, Toulouse and Braga, as well as several teams from his homeland.
The Fire Dragons were last in action only on Sunday and recorded a 1-0 win over Bangkok Glass courtesy of a fifth-minute strike from captain Rangsan Viwatchaichok.
Image courtesy of BEC Tero Sasana FC