More or less, although the paper is talking about somewhere between "a few times larger than the currently observable size" (p.3) to "not more than a few orders of magnitude larger" (p.6) Either of which counts as "small" in comparison with the generally infinite size implied by current solutions of our flat curvature models.
(Totally unrelated question: How are you getting proper open-closed quotes?)
(Totally unrelated question: How are you getting proper open-closed quotes?)