He did.
In the post match interview.
""I think it was by accident. I didn't try to do anything. If I hurt [Yedlin] I am sorry."
http://www.theargus.co.uk/sport/albion/15555067.No_intent__Chris_Hughton_and_Tomer_Hemed_s_verdict_on_the_Albion_goal_hero_s_stamp/