Justin Bieber Ordered to Miami for Grilling Or Else

Justin Bieber has been ordered to get back to Miami for a deposition, and the judge doesn't care if it means interrupting his current world tour schedule.

We're told Bieber's lawyers were in a packed courtroom Wednesday for the case where a photog is accusing the singer's bodyguards of attacking him inside a Subway restaurant.

According to court docs, the judge is giving Bieber 30 days to return to FL for the grilling by lawyers ... or he'll issue a writ of bodily attachment -- which means sheriff's deputies will haul him in if he doesn't come voluntarily.

Bieber's European leg of his Purpose World Tour doesn't end until late November ... so it's going to be a logistical nightmare.

As we previously reported ... the photog's attorney, Mark DiCowden, will grill Bieber on his previous altercations with photogs and fans. We're also told the depo will be videotaped -- which probably doesn't sit well with Justin's legal team.