And NPR commemorates the event: Mark Memmott, "'Eggcorns': The Gaffes That Spread Like Wildflowers", Weekend Edition 5/30/2015.
Here's the LLOG post where the term was first suggested: "Egg corns: Folk Etymology, Malapropism, Mondegreen, ???", 9/23/2003. There are quite a few eggcorn-related posts in LLOG Classic and New LLOG as well. And anyone interested in the topic should check out Chris Waigl's Eggcorn Database.
See also Katy Steinmetz, "This Is What ‘Eggcorns’ Are (and Why They’re Jar-Droppingly Good)", Time Magazine 5/30/2015.