Hi JD Power.
I searched the WC 5335 Knowledgebase for an article that might answer your question. It might be caused by a small piece of paper that was torn from the first paper you removed. If not, you may want to check for other solutions in our knowledgebase to see if there might be something that could answer your question.
Here is the solution I found.
Clear the Paper Jam in the Office Finisher LX
NOTE: If a paper jam occurs, the Touch Screen will display an animated graphic of the location of the jam. Jammed paper should be removed in the normal direction of travel whenever possible.
To clear a jam under the Top Cover of the Office Finisher LX:
To clear a jam in the Finisher Transport of the Office Finisher LX:
NOTE: The cover is hinged and cannot be removed from the printer.
This is the link to the WC5335 Knowledgebase. http://www.support.xerox.com/support/workcentre-5300-series/support/enus.html
I researched the same and everything here on Xpert Tech. There is no residual scrap of paper under the top cover and the customers paper is Xerox spec. Still puzzled.