This has probably to do with what they were working on Verizon. They got safestrap working on Verizon and said they should have safestrap for ATT in a week or so.
Hopefully this has something to do with that and we can get the workaround for the bootloader.
Edit: You can do a search for safestrap verizon att note 3 and you'll find it.
It has not been updated about the ATT safestrap, but you can see where it says it would be coming in the next week. They stated that on the 11/17. So...... it's been a week.