OK, I'm not going to talk about your problem with food (because what do I know?) but about your problem with your husband, because that's the thread you started - the title of your thread is "Is husband right that I need psychological help?", and you finish with "Who is the one that is being unreasonable"?
Let's start with who is being unreasonable, your husband or yourself?
Nobody is being unreasonable here. You had a traumatic experience, and since your OP you have detailed extensive treatments you have tried to get past this trauma. Your husband did not appreciate the extent to which your disordered eating would impact on your joint life so he's not being unreasonable either.
Next up "Is husband right that I need psychological help?". Well you already know the answer to that and it is 'yes', because this is not something you can do alone and since it's a psychological problem you need psychological help. Yes you have already had lots of psychological help but it hasn't resolved the issue, has it? So why are you balking at him pointing out the obvious?
The way he put it and the scenario in which he put it is what has got to you, I think. Let's have a look at that:
"Anyway, we were on holiday and he really lost his cool with me. I was eating fruit and boiled eggs and he told me I need help. And that he was getting tired by my the restrictions I place on myself and therefore him."
So (again, in my opinion) him stating that he was getting tired of it gave you a fright. You considered the possibility that he could choose to end the marriage over this, and since it's not something you feel you can change you felt a loss of control. And let's face it, all your restrictions are about control, your desire to control everything that you eat to ensure you never face contaminated food ever again. I'd imagine that the feeling of not being in control hit you harder than it would hit me. And there's also the small matter that at heart, you know he is right. ("I don’t want to be like this.") I wonder if you've subconsciously been waiting for him to voice his frustration?
When you said "Husband obviously knew what he was signing up for when he married me. I do not see myself ever letting my guard down" that sounded a bit defensive to me. Did he really know the extent of what he was 'signing up for'? You've detailed a few of the precautions you take, such as all fruit and veg being "washed heavily with vinegar". I consider it unlikely that you started doing that from Day 1. Have your precautions become more intrusive over time? You took precautions, maybe you felt that should ease your mind but it didn't so you piled on more? Meaning that husband definitely didn't know what he was signing up for, because you've got a lot stricter since he signed up? Even if that is not the case, really, he couldn't possibly know what he was signing up for. And watching the person you love going to extremes cannot be easy. The drip-drip-drip effect and the increasing certainty that this is never going to change and this is the rest of their life - well, yes, I think I would break at some point; and maybe that is where your husband has reached.
So, set aside YOUR issues, and look at his. Are there any changes possible that would take the pressure off of him? Could you, for example, go together to a cafe and he has coffee and cake and you have a bottle of water? Could you consider black tea, on the basis that boiling water takes care of the hygiene? Even if it maybe sits in front of you untouched? Somehow go through the motions so tht he feels your restrictions less?