"LOL-U are in Utah snowboarding w/'friends'-lol-ur redic," wrote Glassman in a post to her Twitter account, Us Weeklyreported Friday.
Early last week, Gosselin told X17 Online he "won't be home" for Thanksgiving, as he would instead be "going to [his] grandma's."
Thanksgiving was his estranged wife Kate Gosselin's designated day with the kids as part of their joint-custody agreement, which is why he wouldn't be at the family's Wernersville, PA home.
Instead, Kate spent Thanksgiving at the home with her eight children, her bodyguard Steve Neild, his wife and their kids, Us reported, adding Jon was scheduled to return home over the weekend.
Prior to his plans to spend the holiday with his grandma, Jon had originally planned to spend the holiday with Glassman's family.
"My family and I would never let him eat Thanksgiving dinner alone in an apartment," Glassman told Entertainment Tonight during an early November interview in which the couple had discussed their "break."
"I still planned on going to her house on Thanksgiving; that was on my schedule," Jon added.
However Glassman took offense to Jon's statement, prompting an exchange that had seemed to derail the plans.
"On your schedule? What do you mean, 'On my schedule?'" Glassman replied. "Let's see, Kate has the kids, and she's having a nice huge meal with Steve and his family. Uh, let's see, should I go to Hailey's or should I sit in my apartment all alone?"
"Sorry, I used the wrong term," Jon answered. "I plan on going -- I made a promise to her family I would go to her house."
"Made a promise? You're not doing my family any favors!" Glassman replied.
Jon has previously stated Christmas Eve and Christmas day are joint-shared custody days, meaning both he and Kate will be home for that holiday.