Boyz II Men Singer Shawn Stockman -- Aaron Rodgers GOT ROBBED, the NFL is Doomed

Boyz II Men singer Shawn Stockman -- aka Aaron Rodgers' betting buddy -- feels the NFL is heading down a dangerous path with these crappy replacement refs ... and Commissioner Roger Goodell better halt the runaway train ASAP, or else.

Stockman says he hasn't spoken to Rodgers since last night's catastrophe against the Seahawks -- but tells us, "He got robbed. It's horrible. They really need to do something about these officials. It's ridiculous. It's really bad now."

Stockman says Goodell better settle the referee dispute asap ... because once the playoffs roll around "these are gonna be crucial games that these really inexperienced officials are going to have to regulate."

Check out the clip ... Stockman sends a shout out to Rodgers -- who, by the way, STILL hasn't paid off that 49ers jersey bet.