Yes, that gear door looks stuffed alright and appears to have contacted the wheel. Or the wheel has hit it on extension for whatever reason.
Is it normal procedure for the crew to attempt a normal extension first, then use alternate extension for the remaining unextended gear?
During normal extension attempts, might
partial hydraulic pressurisation of the right wing gear components cause the gear to extend out of sequence, after which, not even an Alternate Extension might recover the situation? I don't know how the sequencing valve behaves under these conditions. I dare say only Boeing would know the answer to this one.