I lost my rocket and my L1 cert attempt to this issue last week. I knew of the problem (only read the CTI bulletin, not this thread, unfortunately) and had purchased my pro38 H152 from a dealer at the range the month before. Before my launch, I brought the motor to the dealer, showed it to him and was assured that because he was not included in the list of affected dealers, it should be fine, despite the DEC 30 2015 date code. I asked if there were any replacements for the bad components and was told there won't be. The ejection happened while still under power at 1.8 sec, completely zippering the body tube.
[video]https://youtu.be/tHH9yVK6co0[/video]
This whole thing is kind of a mess, and in my opinion, could have been handled better both by my dealer and CTI. Explicitly listing dealers that received bad batches seems to have made unlisted dealers think they're safe when they're obviously not.
The dealer was also my L1 attempt witness, and it also seems like I should have been able to at least get a replacement motor under warranty. After all, he saw the CATO himself of a motor from within the date range in the bulletin with his price label on it, which I explicitly brought to his attention just before my launch, and expressed my concern about this specific issue. If I were in his shoes, I feel like I would have at least offered to do a standard CATO warranty replacement after witnessing a L1 attempt shred on a motor I sold. Anyway, I'm trying to remain tactful and not name names here, but I think I'll be giving other dealers my business in the future.
There is a happy ending to this story. My new rocket was destroyed, but I also brought my Madcow Phoenix, which failed my L1 attempt last month by snapping a fin on touchdown. I got a bigger chute, repaired the snapped fin, flew it on an H125 classic with a date code from before the bad batch, and got my L1. The delay charge had an actual delay of 14.25 seconds, even though it was supposed to be a 12 second adjusted -3 to a 9 second delay, but thanks to a JL chute release it narrowly escaped another zipper. So I got my L1 on my 3rd flight, and the Phoenix dramatically rose from the ashes, just like I hope Cesaroni is able to do after a really terrible year.