The Czech Republic youth international, 19, made just nine appearances for Town in all competitions and four league starts after arriving on loan from the Bees in early October.
His chances in the first team were limited under former boss Sam Ricketts, where he started just twice in League One.
Zamburek was also out of the picture under new boss Steve Cotterill until he was handed the chance to showcase his ability on Boxing Day, before Town had to make a decision on whether to continue his season-long loan deal.
The teenager impressed and provided a fine assist for Shaun Whalley and was handed another start in the home victory over Blackpool three days later, which remains Shrewsbury last game prior to the significant Covid-19 outbreak.
Zamburek will return to his parent club in the Championship, where he had forced his way into the first-team plans and made senior appearances for Thomas Frank's side.
Cotterill has already made two January reinforcements – both in the loan department – bringing attacker Harry Chapman and defender Matthew Pennington to the club from Blackburn and Everton, respectively. Their debuts have been delayed due to the postponements.
Just five loan players are permitted in a league matchday squad. Town now have five on the books with goalkeepers Matija Sarkic and Deyan Iliev, as well as winger Shilow Tracey.
Iliev, who has not been involved under Cotterill, is expected to return to Arsenal while a decision will be made on Spurs flyer Tracey as Cotterill continues to re-shape the squad he inherited.
Matt Millar's loan from A-League side Newcastle Jets officially ended at the end of December and Shrewsbury are trying to make his move permanent.