http://www.foxnews.com/sports/2015/01/22/ravens-reportedly-tipped-off-colts-about-possible-ball-deflation-by-patriots/
The Ravens also complained about Patriot illegal plays which were legal.
If fact, even when the ref told the DB NOT to cover the ineligible receiver he still did so. DUMB, DUMB and DUMBER ... and sour grapes.
http://www.boston.com/sports/football/patriots/extra_points/2015/01/report_colts_tipped_off_by_ravens_harbaugh_says_te.html