The attached script, find-churning-objects_KB188003, can be used within the Foglight Script Console (Administration | Tooling | Script Console) to determine which objects (with IDs) are currently causing topology churn on a FMS instance.
 
Script variables:
typeName = "Host"; (the topology object to report on)
numDays = 1; (the time period the script queries) 
churnThreshold = 10; (the threshold of the number of changes to an object to report on. Setting this to 0 will report everything)
numObjects = 10; (the list of entries reported in the output)