The funnyman admitted to E! News that Cowell’s serious injury — after falling off a new high-powered electric bike at his LA home — had thrown the return of the talent show into “disarray.”

“We were worried about our friend, and our boss, and our leader, Simon Cowell,” Mandel said.

But the 60-year-old Brit was “doing spectacularly well, considering,” Mandel insisted, confirming he was already walking around.

“The latest I’ve heard is that after a six-hour operation, and some fused discs, and the rod put in his back, yesterday, he was up on his feet, already, he’s already mobile!” the “Deal or No Deal” star said.

“So, as I’ve been saying to a few other people, I wouldn’t count out seeing Simon again before this season’s end,” Mandel insisted of the assumption Cowell would be forced to miss the full AGT season.

Cowell broke his back in three places — coming within an inch of cutting his spine and facing possible paralysis — while showing off his fancy new $20,000 high-powered e-bike to his 6-year-old son, Eric, and 14-year-old stepson, Adam, outside his Malibu, Calif., pad, friends have said.

The bike suddenly did a wheelie, sending Cowell flying to the ground.

The star tweeted Sunday, “Some good advice . . . If you buy an electric trail bike, read the manual before you ride it for the first time.”

The bike he was on at the time goes so fast, up to 60 mph, that it’s been banned from the open road in the UK.