For some positive analysis, remember what the terrain looks like going forward. Trump's fellow leftists won't be able to help him much.
http://theresurgent.com/why-todays-romp-by-trump-doesnt-matter/
the analysis is already off. The article claims with the unbound delegates Trump will get 945-955
With the 28 unbound delegates on Trump slate he is at 984. Without the unbound 956.
The margin of error in the article is already like Trump winning SD or NB (29-39 delegates)