updated 04/21/2010 AT 11:00 AM ET
•originally published 04/21/2010 AT 12:40 PM ET
Monday in Orlando, Fla., the golf champ attended a Nickelback concert – where, according to TMZ, he partied backstage surrounded by a security team. Earlier that night, he and friends dined together in a restaurant, reports RadarOnline, an event described as his first public outing since the sex scandal that broke last November.
Meanwhile, Elin and the couple’s two children, Sam and Charlie, took off for Sweden, despite the volcanic ash spewing into the skies from Iceland which grounded the majority of Scandinavian and European flights. “Elin and her children have arrived in a very north area, much north of Stockholm,” a source in the Swedish capital tells PEOPLE.