Counties Manukau won the Ranfurly Shield for the first time when they beat Hawkes Bay 27-24 last Saturday and the Steelers host Taranaki in their first defence in Pukekohe on Sunday afternoon.
Any ban would have likely seen Umaga barred from Counties' most important game of the season and would have created a stir.
Counties Manukau released a brief statement last night where Umaga again expressed his remorse for the incident: "I value my role as a coach and a leader and have learned from this situation. It is important that I learn quickly from my mistakes to improve and develop as a coach," the statement read. "I am pleased the hearing is over so I can to turn my attentions to keeping the Ranfurly Shield on Sunday."
Umaga can consider himself lucky.
England's Dylan Hartley was banned for 11 weeks this year when he called referee Wayne Barnes a cheat and was forced to miss the Lions' tour of Australia.
Italian captain Sergio Parisse was also red carded this year when he made comments to a referee during a Top 14 game.
South African Super rugby outfit the Stormers were slapped with a A$25,000 ($28,464) fine when they were found guilty of abusing an assistant referee during their 18-16 win over the Hurricanes in Palmerston North in April.APNZ