Shaquille O'Neal has returned to form -- at least in the EDM sense -- because the dude is out here in Europe head-banging with a bunch of normies ... at a festival he's performing in.
The NBA great was spotted moshing at Tomorrowland in Belgium -- where he's slated to hit the stage as his music persona, DJ Diesel, in a set that's sure to rock the crowd. Seems Shaq wanted a head start though ... 'cause he immersed himself in the crowd beforehand.
Check out this awesome video, shot by photojournalist Adam Glyn, in which Shaq is being mobbed by festival-goers .