Pinchas is mentioned several times in the Tanach but in the pasuk Bamidbar 25:11 this is the only time the 'yod' in his name is diminished in size. I don't know if every manuscript has this anomaly. It was explained to me that his small act of obedience with his hand was instrumental in the Covenant of Peace. I wanted to know if this is a correct interpretation of this pasuk or is there another explanation. I could not find anything else in my research.
A good source. Two possible explanations: -They weren't sure if the Yud was supposed to be there, so drew it smaller in case. -Mystically, using violence to solve your problems diminishes the presence of God within you, so the Yud (indicating God) is diminished in Pinchas.