Ever had a mission you couldn't do?

[HM.Medico]

Well, for the record, I have Maltese heritage (immediate, last generation) and when I was playing I was cruising around the med when I got the message that the Santa Marija convoy was coming down. I was within fairly close vicinity so I ordered all ahead standard and was within range of Malta rather quickly.

I ordered Rig For Silent and waited...waited...waited until I started getting the convoys sound signatures. I immediatley ordered PD and upped scope, fixing my position and lining up a destroyer. I could nail that baby easy, it was a matter of hitting the button...but strangely I couldn't do it, I was unable to hit that button. Why? I don't know but something stopped me.

I downed scope and headed to back to Britain.

My question is, have any of you ever had that experience?