My sources say if Deja Vu comes to SFNE it will replace Shipwreck Falls, but as someone said earlier, I'd rather see it replace Flashback. I rode Flashback on Sunday and earlier in July as well and it seems to be getting pretty rough with the catch chain on the far end of the track. The mechanism makes a loud clank that can be felt throughout the train when it catches. But OTOH, SWF has been a maintenance nightmare lately according to my sources so I can see the reasoning for retiring it if that ends up being the case.
As far as Mind Eraser goes, that tends to have a lot of breakdowns lately because of issues with the restraints. On the 4th it broke down when my wife and I were in the queue, the operator's log was laying on the controls in plain sight so I snuck a peek at it, it broke down 4 times that day, mostly for restraint problems that Vekoma has been notorious for. Flashback's restraints aren't that great either, a simple ratcheting shoulder cage with no backup system such as a lap belt, you can't help but wonder if you're gonna fall out sometimes.