SOLUTION
1. Release the LIBRARY OBJECT LOCK on the datafile TBS_ODS_201505.1978.877567729,
1) Kill process 19453 on node bidw1:
#ps -ef|grep 19453
#kill -9 19453
Or
2) Kill it's session from ASM instance:
export ORACLE_SID=+ASM1
sqlplus / as sysdba
alter system kill session '115,42340';
2. Retry delete datafile on asmcmd:
ASMCMD> rm -rf TBS_ODS_201505.1978.877567729