Drunk/chicken struggling to stand and walk

I have just found my 19 week old rir rooster walking funny/uncoordinated and sitting lob sided. Two hours before he was fine. Now seems distressed. I placed him in the coop and he couldn't settle. I have sprayed quite a lot of anti peck spray on him today. Could this be the cause ?

 

There are two older hens that constantly peck the rear of the rooster. not full on pecking but nipping the soft feathers. it seems more of an irritant to the roo. so i sprayed the anti peck stuff. i fear too much after researching the net. they are all fed a standard layers feed as i have 19 week olds and 25 week old. They have water with cider vin in it. I have recently put apples and cabbages in the pen.
The rir is struggling to stand and after a few seconds, plonks down leaning to one side. I have now washed off as much of the spray as i can. Whilst doing so, i found a wound where the wing meets the body. It looked fresh, so i sprayed it with purple antiseptic spray. i am keeping to rir outside tonight to give him air.
Any ideas?

 

do the symptoms sound consistent with over use of the anti peck spray?
ta for the advice

 

do the symptoms sound consistent with over use of the anti peck spray?
ta for the advice

 

yup but i maybe sprayed 4 times what i have now read is the doseage. i am quite angry with myself

 

yup but i maybe sprayed 4 times what i have now read is the doseage. i am quite angry with myself