I don't really think that you can solve this but i file it nevertheless since you never know :)

the Item keeps its movement direction even if there is no pipe at all (ONLY GRAPHICAL!!) the actual movement of the item is correct it's just the rendering. Possible solution could be to tell the client to render more special (to focus on such special cases) if that's not done already.
Maximum "fail Position" was 2 Blocks above it's actual pipe

Ideally we will avoid special casing odd things like this (especially as it only seems to happen when an item is going at full speed).

aise changed items to use a float rather than a vec3 for positioning, so this might help with this case.

Oh, and this is a leftover bug from AlexIIL/Buildcraft_1.8_Issues#55 and #3200.

This is a less extreme version of something that was fixed before.

i thought this was fixed?

apearently this heapens when breaking pipes so thought it was fixed