How can we get a felony criminal case dismissed without the court?

My boyfriend was arrested in November 2012 for a incident that we knew nothing about prior to the arrest fFor something that allegedly happened in March 2012. He is charged with Felony aggrivated cruelty to animals. Our neighbors mother said he threw our cat outside, shot it with high powered rifle, threw the dead animal in her daughters yard infront of my children. The day in question was Mothers day, we were with my parents, who will account for him, my three children are 9, 11 & 13 can account for him and our cat that now resides at another neighbors house is still very much alive. We have countless incidents with the neighbors mother and she is trying to cause trouble. He was arrested, costing $650.00 bail, a days loss of pay, and now legal fees for a crime he did not do and wasnt even home to commit. Desperately needing affordable help. He works at a tire store we arent financially able to pay expensive legal fees in a lump sum.