From behind probably would have involved more planning, There probably is a circular route to get around there somehow but right now, not very practical.
Tanic has picked up Dak and Rianna, leaving Xavier and Galder on foot I feel. Gallador now wants to move in; it will he Pilot rolls to drive defensively enough to avoid further shells.
Galder will drag himself from the smoking wreckage of his landspeeder, cursing as he holds his head from a bleeding cut across his temple.
"Zorin wasn't kidding," Galder groans.
He watches as Dak and Rianna nimbly flip onto Tanic's landspeeder as it passes, then looks to Xavier.
"Looks like we're on foot," Galder says. "Come on, let's go, then..."
Galder will chase after the landspeeders, annoyed at being left behind but knowing he probably would not have ended up well trying to follow Rianna's act.