I would agree that 'I was stood' or 'I was sat' is simply incorrect. But, generally, when something becomes common enough, it starts to make it into dictionaries and then becomes acceptable?
We had an (almost) anthem back in 1988 that went 'cause Ireland are the greatest football team'
and I sang it many a time before a foreigner pointed out it should be 'Ireland IS...'
An example I hate that seems to be getting common is
'I could of eaten a horse' instead of 'I could have...'
Sorry, just went completely off topic
