This is correct. If you are the COIN TOSS WINNER and end up kicking a FG you have to send it back to the other team. They get 1 chance, and 1 chance only.
Im not sure if it is limited to just the playoffs though... I played a game just last night in exhibition mode and the other team won the coin toss and kicked a FG. They then kicked the ball to me and I had 1 drive to either score a TD or get a FG.
I didnt.. so I lost