Yeah, it's never just one guy. I get this dude is the one who made the call, but a big company like WotC doesn't just sue because one guy thinks it's the right call. He had to have some support to have moved ahead with it.
Of course, the lawsuit clearly became untenable and they reversed and the guy resigned. But the idea that only one guy had concerns with the Dragonlance IP and is solely responsible is silly... what's true is that he became the fall guy for the whole fiasco.
WotC didn’t sue. The authors did.
And the one guy literally made the call over one phone conversation. On his own.
Now I’ll grant you, WotC et all should have balked at that right away.
@darjr is right that Weis & Hickman sued WotC, not the other way around.
But I'm with @Urriak Uruk in that it wasn't just that one guy. That one guy, what's his name, was a huge issue for a number of reasons, but the failed relationship and cancelled contract wasn't his solely his fault.