Yeah, the second's blown out at the sun, but oh well, I don't think it looks terrible.
From what I'm finding, HDR can't 'cure' the problem of blown-out highlights, when including the sun in the picture. No matter how many bracketed exposures you take, there always seems to be a 'white hole' where the sun ought to be. And in some cases, HDR can make things worse rather than better.
I've been taking the easy way out: only including the sun when it's much lower in the sky (towards sunset), or partially hidden by cloud or haze. These conditions seem to respond better to the HDR treatment, IMO.