Whitney Houston’s Family — Bobby Brown’s DUI Proves He’s a Bad Influence

Whitney Houston“s mother believes Bobby Brown“s DUI arrest proves what she”s been telling people all along … he”s just a bad dude.

Sources close to Cissy Houston tell us … she”s always felt Bobby was a cancer … who infected Whitney”s life with negative influences.

We”re told Cissy felt “vindicated” when she found out Bobby was arrested for driving drunk on Monday afternoon … and believes the incident is exactly why she wants Bobby to “keep his distance” from his daughter Bobbi Kristina.

The Houstons believe Bobbi K has been in a “vulnerable place” since Whitney passed … and as one source puts it, “This is the last person she needs to be around.”

Instead, we”re told Cissy wants Bobbi Kristina to hang around “positive mentors” … like Clive Davis.