For sure Proth's handled it on the line, was guilty of unsporting behavior and should be punished; but the game was a friendly and it should have been enough for him to be sent walking for an early bath, not with the unnecessary red card, but by instant substitution. The aim of this game was to exercise and try out players; but because of the referee's unnecessary attention to detail the game became blighted with little up front achievement as the 10 men tried to contain the Gill's pressure. It is a credit that they were held to two goals after the incident.
I remember last year's Gills friendly when McKim, I think it was (apology if incorrect), tussled constantly with the young Gill's midfielder who eventually became agitated and threw a petulant arm. The referee appeared to send them both for an early bath with substitutions taking place immediately. Common sense prevailed then; today was plain dogmatic nonsense. Players of both sides remonstrated for common sense to prevail but our man in black lost not only the plot today but lost respect for his position and brought refereeing standards back up for a very early seasonal discussion!
I would guess that today's red card will count in the season's tally and that Proth's will miss a league game as exclusion from further friendly games won't count, even though the sending off was during a friendly game.