http://revach.net/article.php?id=3682

Section: Halacha   Category: Food
Rav Moshe Shternbuch - Washing After The Bathroom, Even The Chofetz Chaim Did Not Do Like The Mishna Brura
If you come out of the bathroom before washing your hands for a Seuda, the Mishna Brura (165:2-3) says you should wash your hands in a way that is not halachically correct for Netilas Yadayim and say Asher Yatzar.  After, you should wash properly and say Al Netilas Yadayim.  He also brings that some say you should wash properly and say Al Netilas Yadayim and then Asher Yatzar.  The Mishna Brura says you can rely on this only b'dieved.

Rav Moshe Shternbuch writes (1:168) that he heard that the best thing to do is to wash properly and say Al Netilas Yadayim.  After drying your hands, before eating the bread, you should say Asher Yatzar since the Shulchan Aruch says that you need not refrain from making a hefsek after drying your hands before HaMotzi.  Although it says that it is still better not to be Mafsik, certainly making and Asher Yatzar is not a hefsek and this is the best solution.

Rav Shternbuch says that his Rebbi, Rav Moshe Schneider witnessed the Chofetz Chaim wash his hands only once and say Al Netilas Yadayim and then say Asher Yatzar after drying his hands, not in accordance with what is written in the Mishna Brura.  The Chazon Ish was also noheg this way as well.