Church discipline advocate here.
If found to be true (church deacon in bar, in brawl), church should read 1 Timothy chapter 3 and Titus chapter one (and a score of other pertinent passages), and bring biblical church discipline against this deacon. He should be removed from office, and placed under disciplinary watch of the church.
But what churches discipline their members any more? That is one reason the testimony of the churches in the world is NO testimony.
Agreed, unfortunately, too few churches these days would remove the deacon, assuming the charges were determined to be true.