You can bypass it, but you can't physically replace it as that's what the dish plugs into. That's what I meant - either way - you'll need the original router connected to the dish and a power supply, even if it's not doing anything.
There's a video of someone doing exactly that here:
You can if you are prepared to buy an external power supply and do a bit of wiring.
Once you put it into bridge mode it is acts as a power supply nothing more.
Wissel and Paul know more about this than me.