They'll probably go Magnum P. I. and have next season be all about House figuring out he killed himself of a drug overdose after this season's finale. I just can't realistically see House going back to work at the hospital after the events of this season's finale; House would have to be delusional to think he could go back after that.
This is television. It wouldn't be the first time that a TV character has committed wildly illegal or immoral acts and then gotten off the hook for them in order to continue as a series regular. Heck, that describes half the characters in Joss Whedon's canon alone.
Apples and oranges. Whedon's shows involve blatantly fantastical concepts from the outset, so discrepancies with "real world" legal practices hardly measure on the radar.
House is supposed to be grounded in reality with a legal system that functions more or less like the one in the "real world." House has done a lot of stupid things over the years but has generally been clever enough to get away with it, and has also avoided maliciously harming others (or attempting to.)
I don't see any amount of cleverness that would get him out of this, given the multiple eyewitnesses and that Cuddy wouldn't be particularly interested in protecting him anymore.
Him having to pay restitution and spend 30 days in the clink doesn't seem like an unreasonable outcome. If he pled guilty he could probably get fourth degree reckless endangerment.
Him going back to work at the hospital is another matter, though. If Cuddy is written out as having quit over the whole thing, then House has no one protecting him and I imagine a lot of the other staff would be bitter toward him about it (as if they didn't dislike him enough already.)