Wobbling driven pulley

Fired up my '72 Cheetah 440 for the first time since getting it home and my joy was replaced with a what the hell. While setting the track tightness it was up on a jack stand and noticed the primary pulley being off. It wobbled a bit and hoped it was th e sheev. It's not. I shut it down and spun the drive shaft very slow and th e shaft is bent about 1/16 of an inch. The eccentric bearing is fine and actually looks new. I wondering if during its replacement somebody bent the drive shaft.. or is there something I'm missing. How could that shaft get bent without wrecking something else?
Thanks in advance for any info
"Rubber side down"

Wobbling driven pulley