It is my understanding that Virginia laws are somewhat sympathetic to the local parishes. There is also a critical mass of Christians able to fund the litigation costs for the parishes. This probably is not a good place for liberals to institute a test case and is thus a sign of their desperation.
The properties in question, large church buildings, both including historic properties (i.e. they could not be sold off as commercial property, as the county and state would permit no significant changes on them) would be of no use to TEC to try to (re)start tiny token denominations. (How many growing large liberal churches do you know of?) To the TEC, these properties would be classic white elephants.
I am sure these lawsuits are merely intimidation tactics to try to garner large cash settlements from these congregations. Since these congregations have shamed TEC, TEC's foxhounds want to make them leave paying with a big of a pound of flesh as possible. This is an old standard legal blackmail technique for certain, and par for the course, for TEC, apostate.