Neil Patrick Harris has suffered from a bout of Tweeter’s remorse.

The “How I Met Your Mother” star angrily took to Twitter on Friday after “Young and the Restless” actor Eric Braeden apparently had a change of heart about making an appearance on Harris's CBS show.

“Eric Braeden is a D-Bag. the actor, (Robin's dad) agreed to a cameo, then last night bailed, saying the part wasn't 'substantial' enough,” Harris tweeted. “We've recast with Ray Wise, a fantastic actor who makes any part 'substantial'. Super excited to welcome him to the family!”

But a few hours later, Harris had a change of heart.

“Now I feel bad for the D-bag comment. Don't know the guy personally,” Harris wrote. “I'm just fiercely protective of our show.”

Meanwhile, Braeden, who appeared in a 2008 episode of “HIMYM” as the elder Robin Scherbatsky, had a few choice words of his own.

"It was utterly inappropriate. He's a little boy,” Braden told the Hollywood Reporter, adding that Harris “could get his teeth knocked in for that kind of nonsense.”

The 69-year-old actor added that he wasn’t making an appearance on the show because he’d recently had hip surgery, was “exhausted” from work, and the part was only two lines. “Two lines," Braeden said, "I don’t do that for anyone.”

But he didn't stop there. The actor added in a statement to CNN, “I’ve been in this business for 50 years - I’ve seen so many actors come and go - most of them never to be seen or heard of again. I suggest whoever this young fellow is enjoy his success and count his blessings and save his money."

The statement continued, "My first time on that show ["How I Met Your Mother"] I enjoyed working with the writers, directors and crew enormously however I did not have the pleasure of meeting most of the cast including this fellow who put his foot in his mouth by saying what he did. It’s Christmastime and I forgive him for his verbal transgression."