The Lancashire side lifted themselves out of the Barclays Premier League relegation zone as they fought out a 1-1 draw in a frantic contest at Bloomfield Road.
The Seasiders now have four games remaining to ensure they stay out of the bottom three.
Southern, one of the heroes of last season's promotion campaign, returned to the side against Newcastle and said: "That was the Blackpool of old, the Blackpool of last season. We are at it and in their faces.
"If we play like that in the next two home games we will stay in this league, no doubt about it.
"We have disappointed ourselves in recent weeks but I think we have just turned a massive corner psychologically."
Source: PA
Source: PA