By Karlee Weinmann (June 11, 2013, 4:43 PM EDT) -- A $3 billion breakup fee Sprint Nextel Corp. demanded from prospective buyer Dish Network Corp. ripped the seams of Dish's bid, ultimately unraveling the deal and making way for a sweetened bid from SoftBank Corp. to steal the show, according to a Tuesday report from Bloomberg. Dish, which has been battling SoftBank for Sprint control for months, had proposed a $1 billion fee instead, to be paid if its proposed takeover failed to notch regulatory approval. On the heels of a Monday announcement that Sprint's board opted to proceed with plans to sell a 70 percent stake to SoftBank for $21.6 billion, Dish was left reeling with a June 18 deadline to submit a "best and final" fully financed counterbid....