No. The possible economic disaster would be if the Eurozone crumbled if we left which would cause a massive global recession that would make 2008 look like a walk in the park. But that is worst case scenario.
See, thats the main problem i have with remain campaign. I've heard all these 'disaster' scenario's before and most of them turned out to be utter bollocks.
Y2K we were told stuff like planes would be falling out of the sky.
Don't join the ERM thingy, Britain will suffer mass unemployment & recession.
Same thing was said if we didn't change from the Pound to the Euro etc.
When it came to pass most of these didn't even register a blip, and in hindsight we were actually better off by not doing what the institutions with vested interests,like the IMF, treasury, BOE suggested.
I firmly now believe that if we leave, we might have a slight blip to the economy for 12 months, but after that we'll be in a lot better position.
The Pound might drop against other major currencies like the dollar etc, but i think that if we leave the Euro zone will be on its arse, and the Euro will drop also paralleling the Pound, so there won't be much change.