This sounds by far the easiest option to me, it will definitely work as long as you can force yourself to spawn down there again (you've been able to do this once before, right?), and avoids having to track down the problem at all. True it would be of benefit to the Forging community if this could be explored further, the more we know about the seemingly endless annoyances in Sandbox, the better. But as far as getting your actual map finished goes, this should work in a really practical way, you can just treat the crypt like the Sky Bubble (on that note I would add that it's probably worth floating the receiver node high up in the crypt just to keep it out of the way for building purposes, just like in the Sky Bubble, and also to avoid the possibility of accidentally deleting it - no real biggie since you could just spawn another one right away, but it avoids a small hassle). And also, to what Squid said: word. Delete the default scenery objects on your canvas ASAP so you won't run in to any trouble with them in future, the OLN will not suffer in practical terms. The only reason I could see for wanting to keep the default scenery objects would be for some kind of OLN and glitched canvas where you really wanted to squeeze literally every last possible spawn out of the map, but this would have to be for a seriously massive project and I bet you'd run out of useable scenery before you reached the true limit if you were building an actual practical map.
You obviously haven't read the thread through. The players are meant to be able to jump down the crypt hole, I said that a few posts back.
I know, necropost, and you probably gave up on this by now. However, just overload the map, worked for me. After doing the grids dissapear, you can then delete it.
Okay, no infraction if this works. But I did give up with the piece-of-**** map a while ago, or more specifically before the thread even started. The thread was more a warning to other forgers. Thanks anyway though.