No, not that I would blame on the algae.

I've had caulerpa racemosa peltada dissolve away twice on me.  The only commonality between the two cases, that I can see, is lack of nutrient input.  In both cases the flow through my refugium was greatly reduced due to snails plugging the line to the refugium.  In both cases the algae dissolved within hours (I don't really know how long the water flow was reduced before the event, I just know that I left the house for just a few hours and came back to a mess).  In the first case the algae was crowded but in the second it was not.  Since that time I've read many times that C. racemosa peltada is very prone to doing this... much more so then C. racemosa (grape) or even the other Caulerpas.

Mike Peletta subscribes to the notion that 24hr lighting is, at least partly, the reason why his macro's don't do this.  His reasoning has to do with the photosynthisis "dark reactions" not occuring which is where/when caulerpa's release toxic compounds and go into the reproductive cycle...  But I don't know.

From what I've read the reason why caulerpa goes sexual is not because it runs out of nutrients, but because it runs out of space.

Mark Peterson wrote: Yeah, Caulerpa has problems when nutrients are low, which can happen faily quickly in any tank.

If the caulerpa runs out of nutrients it would just stop growing and slowly die off.  Which usually only happens if you don't have a DSB, add little or no food to your tank, and have a large skimmer and other filtration.  Otherwise there is usually a constant stream of N and P. 

So what else would other marcoalgaes take out besides N and P that caulerpa does not?