You may not think i thought this through but i think i have.
I think PIA are doing this on purpose for a reason, to scrap the route, remember this time last year the airline wanted to pull the route and have everyone fly from Manchester, but luckily the lord mayor of Bradford managed to persuade the airline to stay, but if i remember correctly she mentioned something regarding the route not working they can pull, which is fair enough...
...Now recently flights have been starting to arrive late and take off late in the early hours of the morning in some cases, which to me out of the last four flights three have been late and i mean late with two being really late, today's included.
Now what i think the airline is trying to do is to push these flights back so that they are really late, now if this is the case and aircraft such as the A310 are taking off late in the night, who does it wake up the majority of time? the local residents surrounding and what do they do in majority of cases regarding the airport? complain to the Leeds City Council. So what does the council do? it has a moan at the airport and PIA and threatens them etc, now PIA could want this to happen so that they can turn around and say, there pulling the route due to the complaints from the council.