I think a similar query had come earlier in a previous post. Even I thought the bypass curve near Lottegollahalli was a good option but seems that its not possible. Likewise I think the only option will be going to TCTB & then reversal. Train 11013/11014 will be taking this route once TCTB is commissioned. But it will be good if a bypass line is built to provide connectivity between HSRA towards Yelahanka in quick time