As I recall, Clear Channel redirected WVBZ's 100.3 signal further away from Charlotte towards Burlington a few years back, and doesn't necessarily care whether it reaches Charlotte or not, considering that it's primarily a Triad area station.
WNCW's translator was originally at 100.7 transmitting from the Colwick tower at Sharon Amity and Randolph Rds. They indeed had to relocate the signal due to 100.9's move-in back in 2003, and at the same time could not renew their lease for the location of the antenna at Colwick (now Sonic Automotive's HQ). That led to the shift to the diectional signal of 100.3 plus an additional signal at 99.1 coming from somewhere off Harris Blvd.
There was a huge effort to bring a translator for WNCW to Charlotte back in the early '90's when there was virtually no alternative/AAA/college radio in the market. This was prior to internet streaming, Sirius XM and when WFAE was playing smooth jazz, WSGE was playing top-40 and WEND was playing beach msic/oldies. While things have changed and more choices have come since, WNCW is still has a loyal following in Western NC, including many in Charlotte who appreciate the clear signals.