What ever managements plan is.... I'm not seeing it. I'd have kept LT over Hill, especially taking the cap into consideration.
Their stats almost similar in numbers but Adin Hill has stronger cases for him (They won them the cup)
Thompson: 46 RS games, 4 Playoffs games, (0.908 SV%/2.7 GAA) (0.921 SV%/2.35 GAA)
Hill: 35 RS games, 3 Playoffs games, (0.909 SV%/2.71 GAA) (0.932 SV%/1.7 GAA)
Hill is still better than Thompson in playoffs (he maintained his performance from cup winning year). Painful but reasonable reason is him over Thompson.