Dallas was worse than the Grizz in 1992-93 (and 93-94, for that matter). 11-71 and 13-69, respectively. 11-71 was the Nuggets record in 97-98, too. There are others, too (Clippers were 12-70 in 86-87), but I'm not big enough of a basketball fan to know them all.
Not that Vancouver's winning 14 games that year is anything to write home about, but you best be respecting Big Country, son.