Brian, You sure that is Ricordia, I have a piece that looks similar to the picture and splits about twice a year, mine is a green metalic hairy mushroom.
From my observations ricordia usually forms a second mouth within the polyps way before it starts splitting, from there the splitting process is very slow, sometimes even months.
The mushroom on the other hand is a more quickly split and starts as a melting bubble gum, actually allowing the weight of one side pull on the other, I usually cant even tell were is it going to break cause thee is no mouth form yet, the whole process takes about 3 weeks.