I don't think I've ever heard that description but I agree with it. It is my understanding that if you don't fall for Satan's tricks during his tribulation and remain focused on God's Word you come through it. After all, God wouldn't be angry at us.
Then, the 7th trump sounds and the true Christ arrives and we are all changed into our spirit bodies - the good, the bad and the ugly. We just have to make it through Satan's "hour of tribulation".
The spell check on FR had never heard of pre wrathers before either. :-)