I’m not exactly sure that a 1 out of 4,550 chance of a hit is a “good chance”.
http://neo.jpl.nasa.gov/cgi-bin/ip?2.2e-04
http://neo.jpl.nasa.gov/risk/2012da14.html
lol.
In other words the proposed solutions could easily make it more likely to hit Earth.
Yes. 16,000 miles is close, but it’s not so close that you’d worry about a hit. It’s well beyond the atmosphere.