Ok, so let's get this straight:
- Monster was designing and selling Beats headphones (explains the overpricing)
- Beats decided to sell 51% of their shares to HTC, which triggered a change of ownership clause that allowed them to stop Monster from designing and selling Beats headphones
- Once they stop Monster from designing and selling Beats headphones, they buy back the 51% share from HTC almost immediately
- At the same time, they convinced Monster's CEO to sell his shares of Beats
Now to me this screams we wanted to change who designed and sold Beats headphones, so we decided to do something that would force an ownership change, which changes the contract, then buy the shares back so we are the owners again.
While this may technically be legal, it is definitely not the right thing to have done.