How is Hybridmixer a ponzi? There's no fixed claims of return on their site.
the correct term for it is scam, because they are running a fake mixer which you can read the explanation in this topic and also in this feedback on the last page of their topic
https://bitcointalk.org/index.php?topic=1589308.msg15972805#msg15972805and also it is clear now since the owner has ran away and there is no response from him.
So better next time we must think advance and expect the unexpected this mixing scam site is never happen before or shall we say i miss something here who goes first, so by next time we just try the new came site just because of couriousity since scammers now are updated to make some new scamming ideas that they can apply just to scam people.