I ran into that same problem . . .
. . . with some .357 Maximum rounds I acquired in a "package" buy. The reload info I got with them scared me to death, so I decided to pull the bullets and start over. The first three I tried to pull with the intertia (hammer) type puller resulted in the same thing you show, and I was afraid I'd break the puller. Fortunately, there were only a dozen or so that were questionable, so I just cut the cases off behind the bullets, dumped the powder, and scrapped the rest. Hated to lose the brass and bullets, but . . .
Very strange. I'd never have believed it if I hasn't seen it myself.

Complete thread:
- Talk about neck tension...photo - 
rob, 
2013-11-25, 10:46 
- I guess I'll recover the lead cores... - 
rob, 
2013-11-25, 10:53
- I ran into that same problem . . . - 
Kentucky, 
2013-11-25, 11:41
- I'm gonna try to find a bolt... - 
rob, 
2013-11-25, 12:18
- Have you tried seating them deeper to break them loose? - 
John K., 
2013-11-25, 12:29
- Yeah...pushed one in about 1/16" but it - 
rob, 
2013-11-25, 12:51
- Yeah...pushed one in about 1/16" but it - 
Slow Hand, 
2013-11-25, 12:59
- I thought about it... - rob, 2013-11-25, 13:09
 
 
 - Yeah...pushed one in about 1/16" but it - 
Slow Hand, 
2013-11-25, 12:59
 
 - Yeah...pushed one in about 1/16" but it - 
rob, 
2013-11-25, 12:51
 - Maybe you just need to buy a M27... - 
Rob Leahy, 
2013-11-25, 13:09
- True that! - rob, 2013-11-25, 13:10
 
 
 - Have you tried seating them deeper to break them loose? - 
John K., 
2013-11-25, 12:29
 
 - I'm gonna try to find a bolt... - 
rob, 
2013-11-25, 12:18
 
 - I ran into that same problem . . . - 
Kentucky, 
2013-11-25, 11:41
 - Talk about neck tension...photo - 
Cherokee, 
2013-11-25, 18:22
- Brand new Starline brass:) - rob, 2013-11-25, 18:32
 
 
 - I guess I'll recover the lead cores... - 
rob, 
2013-11-25, 10:53