This is how I see this panning out. Lions & Rowe part company on the 2nd of June, after a few weeks of rumours. Lions apply for 28 day facility which conviently takes us to 30th June, in the mean time use the facility to pick suitable guests. On the 1st of July the new averages come into effect, now it just so happens that Rowe now as a rolling average of 4.16 ( see lions statistics page on their website). Because the rolling average is losing 2 matches a month, so started at 20, then 18 for May, 16 for June, so when the June averages are annouced on the 23rd of June it seems Rowe must have lost 3 lowish scores & will be replaced with the 9 he scored at Birmingham, hence the jump from 3.95 to 4.16.
This will give them more scope to find a replacement, possibly Zane Keleher, who looks like he finished last season on 4.06 or maybe an untried Aussie on a 4.00.