As the co-creator of this record I appreciate innovation but this is definitely a cheat. Sorry.
I contest this being a record. This was previously accomplished as part of Vince Veneziani's "Most Gang Signs Thrown in a Minute" on Feb 11, 2009. And although that wasn't specifically about longest word spelled, there is video on this site of someone else completing this feat. And I agree with the folks that say there are photos of people doing this all over the internet. Do a 6 letter word and I'd be happy to applaud your feat.