This is a tough situation. As a former residency director I may be concerned about your reasons. If you have some personality issues at your current program, how do I know that won't happen in my program. I may also be concerned that you may not have done your homework if you are now questioning the quality of the program. Did you do any research or visit the program prior to applying and accepting the program?
These will definitely be concerns for any residency you are considering. There are some grads who don't get the chance to obtain a program, so some directors are hesitant to take someone who has already successfully landed a program.
Some attendings never turn over the knife. That's not the program, it's the surgeon. Additionally, I only allow a resident to cut if I have complete confidence in her/ his ability. It's not automatic, it's a privilege that has to be earned.