The phrase "new savior" refers to someone who is believed to bring help, salvation, or positive change in a situation or for a group of people. Full definition
If Mormonism is true, that means Jesus failed to establish the Gospel when He was here and the truth was lost for 19 centuries until the new savior, Joseph Smith, could bring the new gospel, that really isn't a new Gospel, but the Gospel Jesus was unable to firmly establish. (religion.blogs.cnn.com)
Thus our Christian energies were largely preoccupied by and diverted to our new savior, Joseph Smith, and the defense of him and his inventions. (firstthings.com)