2004 VOLVO XC90 T6 Transmission Flush

[jason_maxw]

Hi there, I'm new to this forum and this is my first post here. I learned a lot in the forum and thanks all your guys contributions.
My 04 Volvo XC90 T6(bought it from local dealer in 2010) was at 232,400km this month. Last transmission flush happened at 160,000km with original owner. I think this is the time to have the transmission flushed even my transmission didn't have any problems. I've gone through the posts and I'm pretty confident with how to do the work. I bought sump pan gasket and transmission filter from FCP for the work last week. Once removed protection pan I found I couldn't fit my 10mm wrench into the bolt at the corner due to the room is very limited. See picture attached.
Does anybody encounter the same issue with me? Really appreciate if can give me some idea to remove the bolt.