Spencer Pratt Has Eyes for Heidi's Mom

5/13/2010 7:40 PM PDT
We're officially worried for Spencer Pratt.  We just got this pic of Heidi's hubby standing in his driveway doing surveillance after they called the cops on Heidi's mom.

0910_media_removed_Mel_Gibson
TMZ broke the story that Heidi and Spencer called police today after her mom, Darlene, showed up at their house and wouldn't leave. 

Spencer is holding a big-ass piece of crystal -- something he thinks creates good vibes.