X17online caught Lamar Odom drinking cognac at the Beverly Center mall on Sunday, and just one day later, estranged wife Khloe Kardashian tweeted, "People dissapoint."

An eyewitness told X17online, "Lamar didn't seem anxious about ordering a drink at all. He acted like it was no big deal, which is odd for someone who almost died. This guy doesn't seem like he wants to be sober if he's casually drinking at the mall on a Sunday."

Lamar was also photographed drinking at a bar in Sherman Oaks the night before Easter, and according to sources close to the situation, the entire Kardashian family wants him to stay sober. As you may recall, the former NBA star nearly died in October after an overdose in a Las Vegas brothel, and it was Khloe who remained by his side and nursed him back to health.

"I mean, it gets tough, especially if so much gets speculated," Lamar told Entertainment Tonight earlier this spring. "Only a few people know the truth, and I just keep that close to my heart."

We're with Khloe on this one...