Two men down!

[Grail]

In situation 1, you were 100% correct. The rule book states:
Contact which occurs unintentionally in an effort by an opponent to reach a loose ball, or contact which may result when opponents are in equally favorable positions to perform normal defensive or offensive movements, should not be considered illegal, even though the contact may be severe.

In situation 2, I'd have to be there to respond. Certainly you were correct in what you called. As for game management, that's open to interpretation. Would you have made the same call if the player had done the same thing at the 75' mark, just after an inbound from the far end line (assuming no pressure)?