what is the justification for not pronouncing the second "a" in the word? it's not like someone put the letter there just so that it would be ignored on purpose? could it be that the word is slowly being transformed into street language like so many other words that have been "americanized" so as to make it easier to pronounce when using the particular brand of english that we speak?
i mean, just look at how we americans love to substitute the short "a" for other vowels; especially the letter "o" in words such as "a-round", or "a-bout" and "down". or, leave vowels and syllables completely out of a word if we encounter the slightest difficuty in pronouncing them and think nothing of it at all.