Thoughtseize and Misdirection

[MSC]

Hi,
I have a question for a situation, that happened some time ago...

I play Thoughtseize on my opponent and he casts Misdirection on it and changes to target back on me. What happens?

If I understand it correctly it is still my spell, so I have to pay 2 life and then can choose one of my cards to be discarded. I can even choose not to discard anything, right?
What I'm unsure about is, wether or not my opponent gets to see my hand in this situation.

[Koby]

You reveal your hand, and MUST select a non-land card to discard. You will lose 2 life upon resolution.

[Julian23]

Note the difference between cards telling you to "look at target players and" and "target player reveals his or her hand". Whenever a player "reveals" his hand, each other player gets to look at it.

[Malchar]

You may only opt to not choose a card if you're searching a hidden zone for a card with specific characteristics. In this case, the card does have specific characteristics (nonland), but the zone is not hidden because thoughtseize specifies that your hand is revealed.

[MSC]

okay thanks. :-)