  A thrust analysis of Large-Rapidity-Gap events in deep-inelastic ep
collisions is presented, using data taken with the H1 detector at HERA in 1994.
The average thrust of the final states X, which emerge from the dissociation of
virtual photons in the range 10 < Q2 < 100 GeV2, grows with hadronic mass M_X
and implies a dominant 2-jet topology. Thrust is found to decrease with growing
Pt, the thrust jet momentum transverse to the photon-proton collision axis.
Distributions of Pt2 are consistent with being independent of MX. They show a
strong alignment of the thrust axis with the photon-proton collision axis, and
have a large high-Pt tail. The correlation of thrust with MX is similar to that
in e+e- annihilation at sqrt(see)=MX, but with lower values of thrust in the ep
data. The data cannot be described by interpreting the dissociated system X as
a qqbar state but inclusion of a substantial fraction of qqbarg parton
configurations leads naturally to the observed properties. The soft colour
exchange interaction model does not describe the data.
