Alex Murdaugh is heading back to court today as his defense fights to toss his murder case — and limit what a new jury can hear when he’s retried in the killing

Alex Murdaugh is heading back to court today as his defense fights to toss his murder case — and limit what a new jury can hear when he’s retried in the killings of his wife, Maggie, and son, Paul. But one former federal prosecutor says the defense is facing a new reality this time around: They’ve …