It would be good if the mid-carders came out ala nexus... but most of the mid card is there for a reason.
I could buy a revolt by some talents that aren't being used that much currently (none of the supposed frustrated);
Mcintyre, Rhodes, Ryan, Riley, Swagger, Reks, Hawkins, Baretta and even JTG.
People like Ryder and Santino are jokes though. Their characters sell merchandise because they are just catchphrasey and cheesey. I'm sorry but if you are going to have a cheesy, joke gimmick, you need to look like you can back it up. Ryder is probably less cheesy than The Rock (early rock) but the difference is the Rock has the audience in the palm of his hand, plus he looks like he could bitch slap you without much of a problem.
What you've proposed;
Santino coming out and lying there, going against script. Cesaro would probably mutter something to the ref, who has production in his ear, who would probably be told "Let cesaro stiff shot him" or lead to Aj being sent out to strip Santino of the title, which would defeat the object of what Santino was trying to do.
About getting fired; if the talentless stood on the stage and disrupted the card, they would be fired on the spot as they are disrupting a LIVE PPV, that fans have paid money for. There's a definite breach of contract there, especially in the case of santino who would be essentially refusing to even have a match he's being paid for. They may not be used on Raw or Smackdown but they are still CONTRACTED employees, most of which get paid good money to train and travel around the world whilst STILL living comfortably.The issues people like Ryder and Santino have is that they sell A LOT of merchandise and also they were earning money from youtube, which WWE has now taken off them and are getting tiny cuts of those sales (under 10%) whilst Cena is getting 40%+.
What i'm trying to say is this; If you worked in Burger King and refused to serve/stood in the door, they'd fire you. If you worked in the WWE and refused to compete or stood on the ramp/in the ring and did nothing, you are cutting into the companies profits and stopping the company putting on a show for the fans (who paid a lot of money to watch) which gives them plenty of reason to fire you without it affecting Linda's campaign. What would happen if they did this, however, is that media attention would be glaring on the WWE's treatment of mid-carders (and those who were fired would essentially be martyrs by essentially ruining their wrestling careers - i would never hire someone who isn't a team player and a trouble maker). I don't think even TNA would want people who are happy to bring negative attention to their company or go off-script to make their former employees look bad.