Will Topaz sharpened images get rejected?

No, only pictures with artefacts get rejected. Even though the result is impressive, I'm not confident, that the asset will pass. If it passes the quality test, it will need a property release.

Thanks! That photo was actually taken from quite a distance away using a zoom lens. 

I don't think it matters which tools you use to sharpen (Photoshop, Lightroom, Topaz...), just so long as you don't over-sharpen them.

No, I've never read any reports here about Topaz Sharpen being a reason for rejection. The improvement in your attached image is quite remarkable! You just have to inspect carefully and be sure no other unwanted artifacts have been introduced.