Here's an update on that broken Dendrobium pseudobulb. It appears as though the two ends have started to heal back together! Both the bottom half of the growth, and the top half (the part that was broken off, which is still alive) have continued to increase in length and girth. The leaves on top of the growth also look very healthy. I really wasn't sure whether it would work, but it looks like it has. I think orchids may be tougher than we often give them credit for.