Lipo deformation during impact

Hi, I am in a situation that my lipo starts to deformation in the front end which is in contact with battery tray.
I think it is from the impact of bad landing of jump (nose dive).
I already have cushion pad between the lipo and battery tray but it still happened.
Have you had this situation?
How to prevent that?
Is it OK to use the lipo again; any potential harm may happen?