Rear wiper woes

[d1g1t4lc4m3r4]

Problematic rear wiper, tried to remove rear wiper arm, seems jammed on do not want to prise to much incase rear window smashes. So keep applying releasing spray. Has any one modified rear washer on mk2 ocatavias. Not keen on drilling metal work and paint. Had thought disconnecting washer pipe but unsure where.Ive seen numerous torq screws on casing but do not have those sizes, can it be modified any way or not.

[rlp]

I used a small set of pullers to release mine with a coin between the nozzle and the end of the pullers to protect the nozzle , worked well but you need tree hands.