It looked like Furlong was hit by a bottle. He went down, but realised that it didn't really hurt because it was plastic, and that no one was paying any attention anyway, so got up and got on with the game. Hope it was reported by someone at least.
Excellent report. The Freeman show was the best individual performance from a Rangers player I've seen for a long time, as evidenced by the 1m 55s of his own personal highlights.