04/04/2008 AT 12:00 AM EDT
is always welcome back to How I Met Your Mother
"We always said, 'You know, if her character pops, we'll bring her back,'" the CBS sitcom's executive producer Carter Bays tells the Associated Press
. "I thought she was great. I was very proud of that episode."
On the March 24 show
Spears, 26, played at receptionist at a dermatologist's office, opposite Josh Radnor
. Costar Neil Patrick Harris
said Spears was "really funny".
"It was totally weird," Bays said of having Spears on the set. "I think we have a very, like, kind of Midwestern homey vibe here on the show, and it was strange to suddenly have helicopters circling." he said.
The episode wrapped up with Spears's character flirting with womanizer Barney (Harris). The following week, in an episode in which Spears did not appear, a "mystery woman" sabotaging Barney's usually successful attempts to pick up ladies was introduced into the plot.
Asked if Spears might end up to be the saboteur, Bays replied "Could be. There's no reason why not" -- though he also suggested it could be Spears's guest costar Sarah Chalke
So, will Britney come back or won't she? "I don't know," he said. "I don't know the answer to that." --Stephen M. Silverman