The article points outs that the FCC is required to disclose what was discussed at those meetings, and even has links to the slides of the presentation that the representatives made to the FCC while they were there. If you click on those links, you can view the PDFs that were presented, and they clearly outline strong support for net neutrality.

http://apps.fcc.gov/ecfs/document/view?id=60000979857

edit: added a link to the PDF of slides

They denied it; that's practically proof they did it! /tongue in cheek