Substitute Kaka had just sealed victory at the Bernabeu with an 82nd-minute strike when Mourinho left his technical area to pass in front of the visitors' bench and punch his arm in the air while facing the stands.
Villarreal substitute Cani reacted by lobbing a water bottle at him and, although it did not hit the Portuguese, was shown a red card by referee David Fernandez Borbalan.
"I went to celebrate the goal with my son who was behind the visitors' bench, and the Villarreal players thought I was provoking them," Mourinho told the post-match news conference.
"I hope that when one swears on their son they believe you. I think this (situation) comes from a state of affairs where everything I do is always classed as negative."
"I think Mourinho went to celebrate with the fans and my players took a different interpretation, and the referee sent off Cani," Garrido told reporters.
