Nah, there is no curse. The only reason sacy and pancada didn't achieve anything was because that sen roster was grosselly missmanaged.
Lev is a way more structured org and Aspas seems to be getting along pretty well with his teammates.
calling anything a curse after it happens once doesnt make sense imo (unless you say it ironically), this isnt like c9 curse or 2nd place curse (this one was special because it ocurred in every single international until eg came)