The heavier the bleeding the more worrying it is, and your husband should let his GP know what is going on so that he can arrange some tests. When I get an erection my penis curves to the left and looks like a banana. It sounds like you may have Peyronie's disease in which tissues in the shaft of the penis harden, causing scarring, which forces the penis to bend. Most cases are mild and settle without treatment in 12 to 18 months. Occasionally, the scarring can worsen and some men seek medical attention because erections are painful, or they have difficulty making love.
Severe cases can require injection therapy or surgical removal of the scar tissue.
I generally prefer to wait as long as possible before referring as most cases do settle. Some experts say Vitamin E can speed up recovery - it will at least do no harm to try. He regrets he cannot give personal replies.