  We present a multiwavelength analysis of two homologous, short lived,
impulsive flares of GOES class M1.4 and M7.3, that occurred from a very
localized mini-sigmoid region within the active region NOAA 12673 on 2017
September 7. Both flares were associated with initial jet-like plasma ejection
which for a brief amount of time moved toward east in a collimated manner
before drastically changing direction toward southwest. Non-linear force-free
field extrapolation reveals the presence of a compact double-decker flux rope
configuration in the mini-sigmoid region prior to the flares. A set of open
field lines originating near the active region which were most likely
responsible for the anomalous dynamics of the erupted plasma, gave the earliest
indication of an emerging coronal hole near the active region. The horizontal
field distribution suggests a rapid decay of the field above the active region,
implying high proneness of the flux rope system toward eruption. In view of the
low coronal double-decker flux ropes and compact extreme ultra-violet (EUV)
brightening beneath the filament along with associated photospheric magnetic
field changes, our analysis supports the combination of initial tether-cutting
reconnection and subsequent torus instability for driving the eruption.
