It is difficult when we have a slip. However, you dumped the rest of the alcohol out. Your slip/relapse sounds exactly like my last one. I would have never dumped the bottle if I hadn't been in AA. I think it's progress that you were able to connect the dots and dump the booze. It means that the program is working. It doesn't stick for everyone at first. I have been in AA for a year and I am back at 2 months again after a slip.
To put things into perspective, I know a man in my fellowship who was in AA and it took him 9 years. He now has been sober since 1992. He was willing and stuck to it for 9 years. I am not sure what clicked in him - I'd have to ask. He gives me hope to keep going, though.