Only two weeks into his term, new LA City Attorney Carmen Trutanich has raised eyebrows after sending a sharply worded letter to the LA City Planning Commission over its approval of 40,000 square feet of billboards and outdoor signs on the Los Angeles Convention Center. (Last year, LA city council agreed to sell signage rights for the Convention Center to AEG, the owner of Staples Center and LA Live). Trutanich had opposed the move, and in his letter said that by “acting in haste,” the commission “undermined and jeopardized” the work of his office. Their decision to ignore his request, Trutanich also wrote, amounted to “an unfathomable lack of courtesy,” especially at a time when the city is trying to reduce sign numbers. He also added, “I will not hesitate to act in the future if it appears that you are aiding and abetting unlawful conduct despite my contrary advice.” In response LA Planning Commissioner Sean Burton told city council yesterday that he found Trutanich’s language “disturbing and frankly a little bit frightening.” He also said that Trutanich’s statement was “inappropriate” and “sounded like a threat.”  This is getting good…