HUGE HUGS!
Try not to panic!!! Norms was similar once she'd got over the shock of finding herself in a new home she got in a complete huff/strop for about 4 months and would actually do the opposite of what I said at times whilst glaring at me. Eventually, it started to settle and at that point I went on a 5 day hol and when I got back, we were back to square one. I was in the dog house for leaving her after she'd started to trust me and it took another 4+ months to persuade her things were ok.
I agree with some of the other comments - try and take him out of the situations he's reacting to just now to take the pressure off him whilst he finds his feet. If you can find a behaviourist that has experience of rescues (and cockers!) that would also really help give you the confidence you need right now to get through this with him... I had very similar worries to you when I took Normy on and nearly lost my bottle a number of times (baring in mind she's incredibly strong and weighed 36 Kilo's when I first got her
). She was at times extremely aggressive on the lead towards other dogs and sometimes people. Initially we think it was fear then she started guarding me, the house, the car against anything and everything. I've had her a year and a half now and today on the walk, we had LOTS of situations where previously she'd have gone nuts but she now listens to me telling her to leave things.. the second I spot her brow wrinkling or the tell tail strutting in front of me. I stop dead and she's knows to walk at my side or behind me on a loose lead now - i.e. I'm the one dealing with the situation and she's not to take matters into her
hands paws/teeth
. To achieve this, I first had to tackle her horrific pulling on the lead, which also took months
, but I do now have a big strong dog that walks nicely on a slack lead on a normal rolled leather collar (rather than the awful 'head gear' she came to me in that was adding to her aggression problems).
Another trick that worked with her was that I had a trainer standing near me whilst other dogs walked past us or near us. The second she kicked off I had to pass the lead to the trainer and walk away from her whilst the trainer ignored her and held her where she was so she couldn't get back to me - the association being that if she started guarding me she lost me..
Now I don't know if Alfie's behaviour is for similar reasons but at the moment he will be going through a lot of early days after rehoming issues. A good behaviorist will be able to tell you the best way to react when he does these things - and the best way to proactively manage situations before he kicks off. But it can be a bit tricky finding a 'good' one so do lots of phone calls and chatting to them before you take them on.
All I can say by way of encouragement is that a year and half on.. after a lot of frustration and set backs (aside her aggression issues her hunt drive also meant that I have had months of loosing her EVERY walk for up to 40 mins.. another 'issue' we've mostly overcome
), I now have a really really wonderful dog. She will at times still catch me out, but on the whole now really wants to please me. She now knows the sort of behaviour that does please me and what I expect of her and boy... does it feel good! The sense of achievement you'll get from helping a dog like Alfie and the bond you'll develop in some ways, will really outweigh what you can achieve with a pup from scratch.
Hope you're ok, I really know what you're going through.. keep posting and try and take one day at a time with him just now..
Hannah xxxx