Spencer Pratt and Heidi Montag: Leaving The Hills?

The Hills stars Heidi Montag and Spencer Pratt, featured prominently on the show since 2006, may be leaving it before the series finale later this summer.

Neither has taped an episode since mid-April.

A big reason for that? Spencer Pratt was suspended from the show after threatening to kill a producer... never endears you to the production department.

Rumors also suggest Heidi Montag's "role was reduced" after she objected to a faux-divorce story line. They wanted her to fake divorce Spencer? Shocker!

Show creator Adam DiVello, who Montag recently accused of sexual harassment, "doesn't think Heidi and Spencer will come back for the series finale."

We suppose this isn't too shocking, or sad. If this week's The Hills was any indication, their behavior is growing increasingly erratic and out of control.

HAPPY TRAILS: Are the increasingly erratic Heidi Montag and Spencer Pratt ready to fly the coop before The Hills even ends? [Photo: PacificCoastNewsOnline.com]

Moreover, Heidi Montag wasn't invited to a secret May 6 powwow DiVello had with the female cast in Santa Monica, Calif., to "brainstorm the series finale."

NOTE: That's right, the producers "brainstorm" episodes. Of a reality show. Can it get any more ridiculous than that? They don't even pretend anymore.

"All the girls were asked to come up with ideas of how the show ends," an insider tells Us. Among the ideas: a trip to Costa Rica for the 100th episode.

Another idea? A future Sex and the City–style movie sequel.

"He wants The Hills to end on an upbeat tone," a source tells Us Weekly of DiVello's plan. "He wants to prove to the audience that the girls are going on to bigger and better things and that the show was good for them."

In the case of one cast member, it was pretty terrible for her. We think anyone who's seen the Heidi Montag plastic surgery pictures will agree with us.