Definitely agree. In general terms, a sentence, like a story, should be as short or as long as it needs to be to get the job done in the most efficient or effective way possible. As a device, the change of pace or even style can add urgency or signify a breakdown in a character (I can't think of the title now, or even the author(!), but I read something a few years back where a previously 'normal'-if-uptight character descended into insanity. The short-sentence (and single-sentence paragraph, often unfinished) device was used to show the chaotic thought processes interweaving, overlapping, contradicting and shooting off at random tangents, and was very effective because it was well done and used in fairly short bursts between longer pieces of 'outside' narrative).
Goes back to what Uncle Steve said in On Writing re: having the right tool for the job at hand.