WAS THIS A LEGAL GOAL?

In the EUROPA LEAGUEA , in the match between the Dutch club Feynoord and Belgian club Standard Liege . The Feynoord winger took a legal throw in , but it took a very wicked bounce and went in high into the corner of the net. The funny thing is that the stupid referee allowed this goal to stand. But according to F.I.F.a rules a goal can not be scored by a throw in. A goal must be scored by using the leg, head or chest only.