Dangerous bog on burnslack fell

Mark Archer sent me this email recently.  Thought it is worth sharing.
“Very recently I went on a walk up Parlick, to the summit cairn on Fair Snape Fell, then headed east over Wolf Fell, Saddle Fell towards Fair Oak fell with the intention of reaching Totridge Fell. Because the route was so boggy and peaty, I curtailed my intentions to reach Totridge Fell and turned round just past Burnslack Brook and the grouse butts where the public footpath changes direction at right angles. Almost immediately I stepped into a bog across the footpath and became firmly stuck up to my waist and I was unable to extricate myself. After 20 minutes of struggling, I decided to phone mountain rescue however my mobile had no signal. This was worrying because I had left at ETA at home of 5pm. It was still only 1pm and I didn’t fancy being stuck for up to 5-6 hours in a bog in fading light and descending cloud. There was nothing for it but to dig myself out. This took a considerable amount of time, strain and effort. No one else was on the fell to help me and after a distinctly hairy period of time, I managed to loosen one leg and twenty minutes later the other. I then rolled out of the bog to firmer ground.
I had noticed that many stiles had been erected along the fence which marks the footpath route, diverting the walker to more solid ground. I had also noticed that many fence posts had been distributed into some of the deeper bogs, however the one I fell into had no remedial treatment. I was lucky that I managed to get out or the situation could have been dire for me. Should there not be warning signs of the dangers along this path or is it just tough luck on my part? Whoever erected the stiles and fence posts obviously is aware of the problem.
Because I was completely exhausted, I decided to descend the gully containing Burnslack Brook rather than venturing back to Parlick across the peat hags. I had had a very lucky escape!”