My issue with them is this - if they're going to claim the gift of prophecy, I expect their prophecies to be perfect, per Deuteronomy 13 and 18. If any prophecies fail to come to pass (Deut 18), and/or if Sandford preaches a non-Biblical God (Deut 13), John Sandford forfeits all claims to that gift.
I guess you'd best ignore Christ's words in the NT and go get you a pile of rocks. I can give you directions to Sandford's house.