I'd like to call him on that cheap shot.
I'd like to do this again from the beginning with a fresh and unbiased Plesiosaur skull. To Whit:
A reliable replica cast from a commercial outlet http://www.dinostar.com/oldsite/temp/fossil-replicas/dinosaur-reproductions/skulls/plesiosaur-skull-84.html
And use this fossil skull replica in the same experiment.
Here is the Biggest and most high quality version of the photo I could gert on my photosearch, from thedigitalcelt: http://www.thedigitalcelt.com/on-this-day-may-2-1933-loch-ness-monster-sighted/