The family finally opened up about Rob Kardashian's sudden departure from the spotlight during this week's episode of Keeping Up with the Kardashians. Credit: Steven Lawton/WireImage

Rob Kardashian's been the subject of constant speculation since he skipped out on Kim's wedding to Kanye West, and the family finally opened up about his sudden departure from the spotlight during this week's episode of Keeping Up With the Kardashians. While Rob didn't appear on camera, his sisters worked with a specialist to get their brother help, and Kris Jenner revealed her biggest fear — that her son might die.

The Scoop on Rob's Alarming Behavior

Rob's personal problems have been documented on KUWTK before, but the family pulled back the curtain on his struggles in a way viewers have never seen. Turns out the youngest Kardashian sibling almost never leaves the house and spends huge amounts of money on a weekly basis — even more than Kris! Considering this momager basically makes it rain 24/7, that's saying something. "I've gotten a few reports that he's been spending a lot of money and locking himself up in his room a lot and not really coming out," Kris said during a candid moment. "I'm just worried about what's going on." Sounds like the struggle is officially real.

The Details of Rob's Treatment Plan 

Kris, Kim, and Kourtney teamed up with a professional to get Rob stabilized using in-home medical treatment, but Khloe wasn't thrilled with their plan. Despite Kris saying "I feel like if I don't help him do something drastic that he's gonna die," Khloe felt like the best way to approach her brother was taking things slow. She might have been right, because the sock designer called his big sister during his first round of medication, leading Khloe to deliver an emotional plea. "You leave every facility we take you to, so what’s the right way?" she said while crying. "Just accept the f––king help!”

The Verdict: Rob's Officially Cut Off

Talk about tough love! While the rest of the Kardashian clan were all about getting Rob to stick to his new program, Kim wanted to kick him out of the house and cut off his credit cards. Her suggestion? Telling her brother "You are cut off financially, not taken care of whatsoever, so either go now or accept our help." Yikes! It was unclear just how far the Kardashians went with cutting Rob off, but his relationship with Khloe became so tense that he ended up crashing with Kris.

Keeping Up With the Kardashians airs Sundays at 9 p.m. ET on E!.