Sprint's (S) was just "hours away" from agreeing to an $8B acquisition of discount carrier MetroPCS (PCS - current market cap of $4.35B) before its board vetoed the deal, claims CNBC's David Faber. No details are given, though it's quite conceivable that MetroPCS' spectrum and 4G LTE network could interest Sprint. PCS +5.3% AH. LEAP +5%. S -0.4%.