Electrons scattered from a thread will behave either ballistically or diffractively depending on the scale of the interaction. This is also true for light. Rayleigh or Compton scattering that is of atomic dimension will show very short wavelength diffraction and therefore be virtually ballistic. Scattering that involves the dimension of the thread will show larger wavelength diffraction.
"...would a projected electron (moving through an amalgam of gravitational field overlap) in the inertial domain frame of an experimental apparatus, persist as a distinct mass, or phase in and out of existential diffeomorphis (?) and would it's relative velocity through the amalgamated field environment alter it's physical properties such that it could 'wrap' around a significantly small material object (spider silk) in the course of it's initially projected path without becoming bound to the electrostatic fine structure surface above a threshold velocity?"
First of all, useful electron beams usually have energies like hundreds of eV or more and so the wavelengths are much shorter than the thickness of a spider thread and such electrons diffract off of lattice planes. However, electrons can also scatter off of individual atoms of the thread, clusters of atoms, or indeed the whole thread.
In principle, an electron at 2.5 eV will diffract similar to light for a thread of that dimension but electrons also scatter more ballistically like a bullet off of atoms and atom clusters at smaller dimension. Electron beams at such low energies is possible, but really, really tricky due to charging effects. But such an electron is a true matter wave and has both amplitude and phase.
But if you mean to measure a gravity effect, you have a factor of 1e39 to deal with, the ratio of charge to gravity forces.
A single electron at 2.5 eV will diffract just like a single green photon at 2.5 eV from a 0.5 micron diameter thread, but with very different cross sections and absorptions. While light at 2.5 eV is not absorbed by silk, electrons at 2.5 eV will be strongly absorbed and very few will scatter. Those that do scatter will do so mainly ballistically off of atoms and atom planes with even fewer diffracting from the thread dimension.
So it would be better to use a metal thread to keep charging under control since you will need a substantial current to measure the few ballistic as well as the even fewer diffracted electrons. The space charge will limit the current and the beam will need to be focused onto the thread. You measure absorbed electrons as current as well as each scattered and diffracted electron. The scattering tensor would have both a forward lobe as well as a backward lobe and each electron diffraction event will be statistically distributed just like photon events.
The diffraction of an electron from a thread dimension represents the interference of a single electron with itself during the interaction time with the dimensions of the thread, 1.7e-15 s. The ballistic scattering of an electron from the atoms of the thread is a much shorter interaction time, ~1-e18 s, and therefore smaller diffraction spacing. The amplitude and phase of the electric field are what that interference is all about. The realization of a scattered electron as a single diffracted particle depends on all of its possible futures during the interaction time.
What this has to do with a pilot wave is not really clear to me. Each electron carries along a certain amount of self energy since the electron interacts with its own electric field. So in a sense, you can think of this self energy as a pilot wave, but one that is already built into quantum electrodynamics.
The electron will behave either ballistically or diffractively depending on the interaction time with the thread. Note that all of the scattered electrons are really diffracted as well, just at very different spatial and time scales. This is the same for light but with much different cross sections. It is not clear what an interaction time has to do with the pilot wave.
Somehow you would have to have pilot wave dynamics that could scale three orders of magnitude in time in order to emulate the behavior of either photons or electrons. Atomic scattering has interaction times that are roughly three orders of magnitude shorter than the interaction times of the thread dimension of 0.5 microns.
The reason that slits are useful for diffraction is that the cavity effects of the slit dimension dominate diffraction spacing and that determines the interaction time in the slit or in multiple slits.