WBCMT 2005-C21: 38.9% already extended for two years going to maturity default

Transaction: WBCMT 2005-C21
Property: Metropolitan Square 
City/State: Saint Louis, MO       
Property Type: Office
Balance: $124,144,153
Percentage of Deal: 38.92%
Modified Maturity Date: August 11, 2017
MS: Wells Fargo
SS: Wells Fargo Bank, N.A
Reason for Transfer: Imminent Maturity Default
On Servicer Watchlist Prior to Transfer: Yes; 06/11/15
Previously in Special Servicing: Yes; Returned to Master Servicer 3/21/13
Previously Modified: Maturity increased by 24 periods until 08/2017. 
IO period extended. Rate changes over time