hosting-dispatch throws loads of garbage when running in drush 5

It seems that hosting-dispatch has just decided to just be verbose with us:

aegir@marcos:~/hostmaster-6.x-1.9$ drush @hostmaster hosting-dispatch
aegir@marcos:~/hostmaster-6.x-1.9$ DRUSH_BACKEND:{"type":"bootstrap","message":"Bootstrap to phase 0.","timestamp":1338502105.4197,"memory":9692968,"error":null,"packet":"log"}

DRUSH_BACKEND:{"type":"bootstrap","message":"Bootstrap to phase 5.","timestamp":1338502105.4294,"memory":9694168,"error":null,"packet":"log"}

DRUSH_BACKEND:{"type":"bootstrap","message":"Drush bootstrap phase : _drush_bootstrap_drupal_root()","timestamp":1338502105.43,"memory":9696784,"error":null,"packet":"log"}

DRUSH_BACKEND:{"type":"notice","message":"Initialized Drupal 6.26 root directory at \/var\/aegir\/hostmaster-6.x-2.x\/","timestamp":1338502105.4411,"memory":11329584,"error":null,"packet":"log"}

DRUSH_BACKEND:{"type":"bootstrap","message":"Drush bootstrap phase : _drush_bootstrap_drupal_site()","timestamp":1338502105.4416,"memory":11331528,"error":null,"packet":"log"}

DRUSH_BACKEND:{"type":"notice","message":"Initialized Drupal site aegir.anarcat.ath.cx at sites\/aegir.anarcat.ath.cx","timestamp":1338502105.4417,"memory":11333864,"error":null,"packet":"log"}

DRUSH_BACKEND:{"type":"debug","message":"Cache HIT cid: 5.3-commandfiles-2-774eda7c3f0324cdd636d035a7aebb59","timestamp":1338502105.4455,"memory":11337032,"error":null,"packet":"log"}
[...]

this goes on and on. Maybe closing #1433406: Make hosting (specifically hosting-dispatch) work with Drush 5 was a bit premature, but it *does* work, it is just too verbose...