In retrospect, this is less surprising, as MTV was continuing to look for the next new thing, and Kihn's brand of straight up rock and roll may have seemed too basic. However, "Reunited" is a totally solid song, and the video was an entertaining remake of The Wizard of Oz.
Without MTV's support, Kihn's success waned, although his 1985 LP, Citizen Kihn did reach #51 (led by the #30 single "Lucky"). However, that was his last charting alum. Kihn continued to release albums on a regular basis through the 1990's (releases have been less regular since then), and became a DJ on San Jose's KFOX radio station for 12 years, ending in 2012.
As an extra bonus, we found a short feature on the making of "Reunited"
Cool trivia fact: Joe Satriani was briefly a member of the Greg Kihn Band (in 1986) before he left to embark on a solo career.