Key phrase here is,"the other bushing went in fine ". For this bushing to lock up so tight that you bent a bar, there is metal to metal interference. When you get it out, the source of the interference has to be discovered and corrected. Cross threading is a possibility, so is a defective bushing. The threads in the support may be damaged now and need repair in addition to whatever the bushing problem is. 20 years in a machine shop taught me that when resistance is high in a threaded assembly, STOP and back it out. Then investigate until the source of the resistance is discovered and corrected. This is ALWAYS easier and less time consuming than straightening out a mess and purchasing new parts. There was a time when I was younger that I felt the pain and frustration of trying to "force" it together. Never do that. Keep at it, you will solve this and be a better mechanic with this experience in your memory.