Would be surprised if GLA - LPL was pulled considering the relatively short time it has been running - unlike other locos, Flybe do seem to carry out extensive market research before committing themselves, rather than simply starting a route because there happens to be an airport there.
Does anyone know how other routes out of LPL are doing? - have been told that BHD is performing well above initial expectations and that additional rotations had been mooted.
The only other possible explanation is a renewed interest in down the road at MAN - seem to remember this was talked about some time ago.