Easy fix for dented bumper?

[wurm]

So unlike a metal fender dent that may "pop" back into shape, it sounds to me like this plastic bumper will require working the plastic more. I've read several references to letting the sun warm it to make the plastic more pliable. Even though it may hit 60 tomorrow here in MA. it's still winter and I can't count on the weather helping out much. Do you think a hair dryer would warm things up enough?

I'm also not having any success is finding instructions for removing the bumper cover.