It is now required that ‘conflict of interest’ are disclosed on all decisions. I would consider that the treasurer paying himself for work based on decisions made by the OC falls into the conflict of interest in the decision making process. I get a feeling that the treasurer is proposing decisions where he can carry out works is common.
Pretty much I see possession as 9/10 of the law. You may wish to consider removing the offending bike rack (exclusive use of common property??) and return the area to original. I would consider doing this at own expense for the enhancement value to own property.
Alley cat