Seriously? You don't understand the question being asked in the OP?
I think Taff understands the question, but like me, he sees nothing wrong.
Scenario: Its a damp day, the ground is slippery on top. Sprinting ball carrier is tackled and brought to ground 4m short of the goal-line, the tackler releases (as per Law) and tackled player continues to slide the remaining 2-3m into in-goal and grounds the ball
Question: Try or PK against tackled player for not releasing.
If you think the former, you are probably in the same camp as Taff, myself and most others here.
If you think the latter, then I wonder why!