I agree there is a high amount of speculation in this article, and he's not the first person to suggest that this item is the patch from her aircraft. (http://www.foxnews.com/science/2013/06/27/photos-could-prove...)

Either way, I'm curious if they will find anything with an ROV. Coral reefs in the middle of the ocean don't provide the necessary protection to preserve an artifact like her aircraft. Which would explain why a single piece was found washed up on an island.