I incubated my clutch at 88.5 and on day 55 (yesterday) they were maybe just a slight bit more dented than yours. I candled them and couldn't see movement either and looked like only the bottom half of the egg was dark (which I thought was the snake). Anyway I cut them open to find that the snakes were taking up every inch of the egg, just crammed in there. Within 24 hours they absorbed every last drop in their egg and crawled out. All 5 were 70 grams and healthy as can be. I'm not going to tell you to cut them, just wanting to share my experience. I posted a thread about it a minute ago. Hope you hit the odds!!