I just reread the whole fight, he never says that, in fact he says he can't use shinso there.
At one point he punches and Hell Joe is surprised and thinks "This place is supposed to be under my control" but there is no indication it was shinso seeing as just before he said he couldn't use any.
The crack part comes after they already defeated Hell Joe and the Red Thrysa is about to suicide blast and then Urek does shoot a bang of shinso into it but for all we know the huge explosion was the Red Thrysa suicide bomb going off early cause Urek's bang interrupted it (Or maybe even from Bam's black hole sphere). Urek's punches seemed to cause way more destruction then the combined shinso explosion of the three of them (and we have no idea whose shinso was the largest part of the blast but its safe to assume it wasn't Urek cause he could barely use Shinso at the time).
Yes that’s exactly what I’m talking about with the shinsoo bang. Urek used only what he needed so he didn’t kill anyone else. He’s actually highly proficient, unlike Yuri who nearly kills everyone around
Seriously though, Urek uses spatial distortion, which has to be a high difficulty shinsoo technique. And SIU has stated Urek can easily fill all positions. And he’s ranked #4. You can’t be that and not have superior shinsoo abilities.
Two things here: 1. Urek is actually considerate of his power and doesn’t throw it around if he doesn’t need it to. It takes a really experienced person to do that. 2. SIU is giving us little by little of Urek to prevent power bloat, give ya something to look forward to later, and also to allow Urek to show up and help - if he ROLF stomped everyone it wouldn’t be fun to see him. And I love seeing Urek - with the power of looooooooove
