Yes mrazek is putting up good numbers, and no doubt his pu k playing ability is great. That doesn't mean they don't want Howard back, the guy is a rookie, he had one bad goal a couple weeks ago and everyone was ready to trade him for "x" player of the week. Now he has a few good games and we don't need our veteran top 10 goalie back? I'd rather reserve judgement till he has a season under his belt. He has no playoff experience, he's still quite young and I guarantee his playing style will bite him in the ads a few games during this stretch and everyone will want to trade him again.
Also mrazek has played 12 games, you can't say he's putting up top 10 numbers without mentioning that very small sample size. One 4-5 goal game and his stats will look bad, one shutout and he's better than rinne, that's what happens when you've played so few games this far into a season.