Joseph Stiglitz stepped down from the Panama Paper's commission to protest the Panamanian government's refusal to guarantee to make the commissions findings public. This refusal is itself an example of the murkieness the commission was formed to pierce. By stepping down Stiglitz helps bring the financial system and its abusers into the light.
I think he did the right thing considering the types of activities he discovered were going on in the committee. I would have resigned from a shady organization, as well. The nation should have more people like him who are not afraid to stand up for righteousness and/or morality and stand against wrongdoings. Society may stop accepting wrong things as right if more people would handle themselves like this fellow did.
Nobel-winning economist Joseph Stiglitz made the right choice by resigning from the Panama government's advisory panel. It was the best way to bring attention to the lack of transparency. Had he remained on the panel and attempted to change the way things were being done, he would have been outnumbered. By resigning, he involves the public in the fight for transparency.
Yes, Joseph Stiglitz is doing the honorable thing by refusing to participate in Panama's famously shady business dealings. A Nobel-prize winner lends certain credibility to anything he partakes in, which is why an opaque and possibly corrupt committee such as the Panama advisory panel should not enjoy the unearned status.