Apply a little silicone sealer to the opening at the lead it should hold it in place. I had one of my O2 connectors crushed when they did my transmission and I just used tape until I replaced it.

 

Well I got it fixed I think. When you look into the connectors where the wires goes in, at least on my 03 the rubber looking stuff is a grommet holding the wire in. I pulled the grommet out of the one that the wire came out, put the wire back into the hole, wire sticking out the grommet enough to make sure it got good contact with the metal/copper connector on the inside of the connector and jammed the grommet in and it seems to be holding (though I put a little tap on that wire and connector to be safe in holding it in place).
All is well now, no more check lights at least.

 

now I wonder it is was ever a bad sensor. I wonder if when I did the octopus hose if that wire got pulled JUST enough to lose the connection but still be in the grommet. Never ganna know.