I hope you're being ironic Sandy. A litre of vodka is enought to kill. If Nath is able to down a litre of vodka and not die, that's an indication of his alcohol-dependence. Ok let's say the ugly word alcoholism.
Nath: drinking on the scale you describe is a death sentence. part of the pattern of drinking to this level is erratic / violent behaviour, out of character, in the lead up to a black-ouit accompanied by memory loss.
Instead of going on th defensive about what happened, why not sit with your legal advisor and one of the arresting officers and listen to a description of your behaviour? You can't remember it, but it's something the cops deal with (sadly) on a regular basis.
You simply aren't special enough for them to conspire against you. If they monitored your bloods and heartbeat it might have been because you were on the edge and might not have come round from this particular binge.
Think about this. Think about the company you're keeping. If boozing to oblivion, fighting, spiking each others drinks 'for a laugh' etc are their normal behaviour, all signs point to an unhappy outcome for you in the medium term.
It's a chance of a wake up call.