Hi Aditya,
You can achieve the removal of the block by placing a short duration for the Payment Block when you first place the block (e.g. for 2-3 days or even 1 day).
This way you wouldn't have to use an enhancement.
If you must automate, you can explore the FICA events 600 to 690 to see in what sequence they are triggered (in de-bug mode with a developer) during the Payment run.
While I don't see any specific 600 series Payment Run FICA event that states "Additional actions after clearing", you could perhaps explore the usage the FICA Clearing Events (i.e. 100 series).
I hope this helps.
Regards,
Ivor