Yes, I understand; I actually meant shooting it out into the air now and then. As for disconnecting, I think it depends on the type of infusions one uses. I had no problem with the SureT, but as I recall you have to prime it after the disconnection.
I found that I learned so much from pumping that I have no regrets whatsoever that I once pumped. I'm sure that it leads me to inject much more often than before the pumping, but unpleasant as that is, my control is much better than before.