Whitney Houston’s year-long comeback after nearly destroying herself through crack addiction may not be all it appears to be. While she seemed fairly together – for Whitney, anyway – at the beginning of the tour, things aren’t going so well on the road. Sources close to the diva say that her family is preparing an intervention to convince Whitney to head back to rehab after seeing increasingly erratic behavior during her world tour. My question is, how can you tell when Whitney’s behavior is anymore erratic than usual?

Worried friends and family members are begging Whitney Houston to go back into rehab! The R&B diva has appeared breathless, exhausted and disoriented during her comeback tour, prompting loved ones to fear she may have returned to her deadly drug abuse habits, say insiders.

Family members are leading a secret campaign to get the Grammy-winning entertainer into a facility for testing and treatment, if necessary, before her demons dead-end her career, according to sources.

“The family members are deeply concerned because Whitney appears to be back to the same erratic and troubling behavior she exhibited when she was in the grips of a crack and cocaine addiction,” an insider told The Enquirer.

“Whitney is drinking alcohol and she’s frequently dazed, confused and seemingly out of it. She came close to destroying her career and professional reputation with drugs, and the family is determined to avert a similar disaster.”

With a lengthy break between the Australian and European legs of her “Nothing But Love” comeback tour, Whitney’s family is racing against time to put the brakes on what they feel could be another downward spiral, confided a source.

As the Enquirer exclusively reported, Whitney refused pleas to postpone the tour amid worry that she was too physically and mentally fragile.

Whitney stumbled through the tour’s kickoff concert on Feb. 6 in Seoul, South Korea – struggling to hit high notes, sweating profusely and tripping over her own feet. Then the singer suffered a horrifying backstage collapse.

Whitney also struggled through her first concert in Australia, where some disgruntled fans walked out, declaring: “It was the worst concert ever.”

Whitney was in rehab in 2004 and 2005, and as The Enquirer has reported, a top medical expert predicts that the 46-year-old singer may have only five years to live unless she turns her life around. And her family is determined to save her.

“Her family wants her to slip into rehab during the break, and then undergo more intensive treatment in June. They feel strongly that Whitney won’t be able to finish the tour unless she gets help right away – and they believe it could save her life.”

[From The National Enquirer print version, March 29, 2010]

I have a hard time believing Whitney was ever sober. I mean, did you see her on Oprah? There are definitely some substances going on there. As for her vocal struggles, I think that was pretty apparent on her “Good Morning America” appearance last summer, in which she did more talking and made the audience and backup singers do almost all the singing whiel she danced around like a freak. Later, she blamed her “Oprah” appearance for the shoddy vocals. According to reports, during the concert in Australia, while Whitney was singing her signature “I Will Always Love You,” she butchered the big high note and stopped in the middle of the song to get a drink of water. No wonder people walked out!

I am wondering why Whitney’s family didn’t think anything was odd about those TV appearances and didn’t try this intervention idea before she hit the road, but hey – better late than never, right? I hope she does listen to them and gets herself together. This might be her last chance to redeem herself. As long as Whitney stays away from ex-husband and current “Celebrity Fit Club” contestant Bobby Brown, she might actually have a chance at cleaning up.