I figured that was the case. When I transferred it there was less than 1/2" compared to day 3 when there appeared to be about 2" of yeast cake, and that was even after the explosion, but I suppose you're correct.
Logistics are actually the biggest issue because I did this 45 mins away at my parents house (fam is moving soon and the wife thought it best not to have this around) and we're going on a cruise this weekend for our anniversary. It looks like I'll pitch some more yeast once I get back, which will be about 3 wks from brew day.